Merge pull request #5649 from rozagerardo/geroza/BAEL-9549_reduce-articles-in-core-java
[BAEL-9549] reduce core-java module migrating code to core-java-lang and core-java-arrays
This commit is contained in:
Loredana Crusoveanu
@@ -1,9 +0,0 @@
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package com.baeldung.accessmodifiers;
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public class Public {
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public Public() {
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SuperPublic.publicMethod(); // Available everywhere.
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SuperPublic.protectedMethod(); // Available in the same package or subclass.
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SuperPublic.defaultMethod(); // Available in the same package.
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}
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}
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@@ -1,9 +0,0 @@
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package com.baeldung.accessmodifiers;
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public class SubClass extends SuperPublic {
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public SubClass() {
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SuperPublic.publicMethod(); // Available everywhere.
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SuperPublic.protectedMethod(); // Available in the same package or subclass.
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SuperPublic.defaultMethod(); // Available in the same package.
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}
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}
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@@ -1,39 +0,0 @@
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package com.baeldung.accessmodifiers;
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//Only public or default access modifiers are permitted
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public class SuperPublic {
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// Always available from anywhere
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static public void publicMethod() {
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System.out.println(SuperPublic.class.getName() + " publicMethod()");
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}
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// Available within the same package
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static void defaultMethod() {
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System.out.println(SuperPublic.class.getName() + " defaultMethod()");
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}
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// Available within the same package and subclasses
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static protected void protectedMethod() {
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System.out.println(SuperPublic.class.getName() + " protectedMethod()");
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}
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// Available within the same class only
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static private void privateMethod() {
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System.out.println(SuperPublic.class.getName() + " privateMethod()");
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}
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// Method in the same class = has access to all members within the same class
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private void anotherPrivateMethod() {
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privateMethod();
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defaultMethod();
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protectedMethod();
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publicMethod(); // Available in the same class only.
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}
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}
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// Only public or default access modifiers are permitted
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class SuperDefault {
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public void publicMethod() {
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System.out.println(this.getClass().getName() + " publicMethod()");
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}
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}
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@@ -1,9 +0,0 @@
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package com.baeldung.accessmodifiers.another;
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import com.baeldung.accessmodifiers.SuperPublic;
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public class AnotherPublic {
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public AnotherPublic() {
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SuperPublic.publicMethod(); // Available everywhere.
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}
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}
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@@ -1,10 +0,0 @@
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package com.baeldung.accessmodifiers.another;
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import com.baeldung.accessmodifiers.SuperPublic;
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public class AnotherSubClass extends SuperPublic {
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public AnotherSubClass() {
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SuperPublic.publicMethod(); // Available everywhere.
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SuperPublic.protectedMethod(); // Available in subclass. Let's note different package.
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}
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}
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@@ -1,9 +0,0 @@
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package com.baeldung.accessmodifiers.another;
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import com.baeldung.accessmodifiers.SuperPublic;
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public class AnotherSuperPublic {
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public AnotherSuperPublic() {
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SuperPublic.publicMethod(); // Available everywhere. Let's note different package.
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}
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}
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@@ -1,21 +0,0 @@
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package com.baeldung.array;
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import org.openjdk.jmh.runner.Runner;
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import org.openjdk.jmh.runner.options.Options;
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import org.openjdk.jmh.runner.options.OptionsBuilder;
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public class ArrayBenchmarkRunner {
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public static void main(String[] args) throws Exception {
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Options options = new OptionsBuilder()
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.include(SearchArrayUnitTest.class.getSimpleName()).threads(1)
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.forks(1).shouldFailOnError(true).shouldDoGC(true)
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.jvmArgs("-server").build();
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new Runner(options).run();
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}
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}
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@@ -1,78 +0,0 @@
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package com.baeldung.array;
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import java.util.Arrays;
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import org.apache.commons.lang.ArrayUtils;
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public class ArrayInitializer {
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static int[] initializeArrayInLoop() {
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int array[] = new int[5];
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for (int i = 0; i < array.length; i++) {
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array[i] = i + 2;
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}
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return array;
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}
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static int[][] initializeMultiDimensionalArrayInLoop() {
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int array[][] = new int[2][5];
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for (int i = 0; i < 2; i++) {
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for (int j = 0; j < 5; j++) {
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array[i][j] = j + 1;
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}
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}
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return array;
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}
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static String[] initializeArrayAtTimeOfDeclarationMethod1() {
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String array[] = new String[] { "Toyota", "Mercedes", "BMW", "Volkswagen", "Skoda" };
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return array;
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}
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static int[] initializeArrayAtTimeOfDeclarationMethod2() {
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int[] array = new int[] { 1, 2, 3, 4, 5 };
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return array;
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}
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static int[] initializeArrayAtTimeOfDeclarationMethod3() {
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int array[] = { 1, 2, 3, 4, 5 };
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return array;
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}
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static long[] initializeArrayUsingArraysFill() {
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long array[] = new long[5];
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Arrays.fill(array, 30);
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return array;
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}
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static int[] initializeArrayRangeUsingArraysFill() {
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int array[] = new int[5];
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Arrays.fill(array, 0, 3, -50);
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return array;
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}
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static int[] initializeArrayUsingArraysCopy() {
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int array[] = { 1, 2, 3, 4, 5 };
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int[] copy = Arrays.copyOf(array, 5);
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return copy;
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}
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static int[] initializeLargerArrayUsingArraysCopy() {
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int array[] = { 1, 2, 3, 4, 5 };
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int[] copy = Arrays.copyOf(array, 6);
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return copy;
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}
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static int[] initializeArrayUsingArraysSetAll() {
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int[] array = new int[20];
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Arrays.setAll(array, p -> p > 9 ? 0 : p);
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return array;
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}
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static char[] initializeArrayUsingArraysUtilClone() {
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char[] array = new char[] { 'a', 'b', 'c' };
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return ArrayUtils.clone(array);
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}
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}
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@@ -1,43 +0,0 @@
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package com.baeldung.array;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.stream.IntStream;
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import org.apache.commons.lang3.ArrayUtils;
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import com.google.common.collect.Lists;
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public class ArrayInverter {
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public void invertUsingFor(Object[] array) {
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for (int i = 0; i < array.length / 2; i++) {
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Object temp = array[i];
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array[i] = array[array.length - 1 - i];
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array[array.length - 1 - i] = temp;
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}
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}
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public void invertUsingCollectionsReverse(Object[] array) {
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List<Object> list = Arrays.asList(array);
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Collections.reverse(list);
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}
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public Object[] invertUsingStreams(final Object[] array) {
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return IntStream.rangeClosed(1, array.length)
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.mapToObj(i -> array[array.length - i])
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.toArray();
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}
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public void invertUsingCommonsLang(Object[] array) {
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ArrayUtils.reverse(array);
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}
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public Object[] invertUsingGuava(Object[] array) {
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List<Object> list = Arrays.asList(array);
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List<Object> reverted = Lists.reverse(list);
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return reverted.toArray();
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}
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}
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@@ -1,159 +0,0 @@
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package com.baeldung.array;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Comparator;
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import java.util.List;
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import java.util.stream.IntStream;
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import java.util.stream.Stream;
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public class ArrayReferenceGuide {
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public static void main(String[] args) {
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declaration();
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initialization();
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access();
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iterating();
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varargs();
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transformIntoList();
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transformIntoStream();
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sort();
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search();
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merge();
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}
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private static void declaration() {
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int[] anArray;
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int anotherArray[];
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}
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private static void initialization() {
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int[] anArray = new int[10];
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anArray[0] = 10;
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anArray[5] = 4;
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int[] anotherArray = new int[] {1, 2, 3, 4, 5};
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}
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private static void access() {
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int[] anArray = new int[10];
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anArray[0] = 10;
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anArray[5] = 4;
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System.out.println(anArray[0]);
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}
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private static void iterating() {
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int[] anArray = new int[] {1, 2, 3, 4, 5};
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for (int i = 0; i < anArray.length; i++) {
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System.out.println(anArray[i]);
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}
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for (int element : anArray) {
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System.out.println(element);
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}
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}
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private static void varargs() {
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String[] groceries = new String[] {"Milk", "Tomato", "Chips"};
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varargMethod(groceries);
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varargMethod("Milk", "Tomato", "Chips");
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}
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private static void varargMethod(String... varargs) {
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for (String element : varargs) {
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System.out.println(element);
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}
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}
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private static void transformIntoList() {
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Integer[] anArray = new Integer[] {1, 2, 3, 4, 5};
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// Naïve implementation
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List<Integer> aList = new ArrayList<>(); // We create an empty list
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for (int element : anArray) {
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// We iterate over array's elements and add them to the list
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aList.add(element);
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}
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// Pretty implementation
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aList = Arrays.asList(anArray);
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// Drawbacks
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try {
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aList.remove(0);
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} catch (UnsupportedOperationException e) {
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System.out.println(e.getMessage());
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}
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try {
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aList.add(6);
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} catch (UnsupportedOperationException e) {
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System.out.println(e.getMessage());
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}
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int[] anotherArray = new int[] {1, 2, 3, 4, 5};
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// List<Integer> anotherList = Arrays.asList(anotherArray);
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}
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private static void transformIntoStream() {
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int[] anArray = new int[] {1, 2, 3, 4, 5};
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IntStream aStream = Arrays.stream(anArray);
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Integer[] anotherArray = new Integer[] {1, 2, 3, 4, 5};
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Stream<Integer> anotherStream = Arrays.stream(anotherArray, 2, 4);
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}
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private static void sort() {
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int[] anArray = new int[] {5, 2, 1, 4, 8};
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Arrays.sort(anArray); // anArray is now {1, 2, 4, 5, 8}
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Integer[] anotherArray = new Integer[] {5, 2, 1, 4, 8};
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Arrays.sort(anotherArray); // anArray is now {1, 2, 4, 5, 8}
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String[] yetAnotherArray = new String[] {"A", "E", "Z", "B", "C"};
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Arrays.sort(yetAnotherArray, 1, 3, Comparator.comparing(String::toString).reversed()); // yetAnotherArray is now {"A", "Z", "E", "B", "C"}
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}
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private static void search() {
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int[] anArray = new int[] {5, 2, 1, 4, 8};
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for (int i = 0; i < anArray.length; i++) {
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if (anArray[i] == 4) {
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System.out.println("Found at index " + i);
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break;
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}
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}
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Arrays.sort(anArray);
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int index = Arrays.binarySearch(anArray, 4);
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System.out.println("Found at index " + index);
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}
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private static void merge() {
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int[] anArray = new int[] {5, 2, 1, 4, 8};
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int[] anotherArray = new int[] {10, 4, 9, 11, 2};
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int[] resultArray = new int[anArray.length + anotherArray.length];
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for (int i = 0; i < resultArray.length; i++) {
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resultArray[i] = (i < anArray.length ? anArray[i] : anotherArray[i - anArray.length]);
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}
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for (int element : resultArray) {
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System.out.println(element);
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}
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Arrays.setAll(resultArray, i -> (i < anArray.length ? anArray[i] : anotherArray[i - anArray.length]));
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for (int element : resultArray) {
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System.out.println(element);
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}
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}
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}
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@@ -1,20 +0,0 @@
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package com.baeldung.array;
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public class Find2ndLargestInArray {
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public static int find2ndLargestElement(int[] array) {
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int maxElement = array[0];
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int secondLargestElement = -1;
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for (int index = 0; index < array.length; index++) {
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if (maxElement <= array[index]) {
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secondLargestElement = maxElement;
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maxElement = array[index];
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} else if (secondLargestElement < array[index]) {
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secondLargestElement = array[index];
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}
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}
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return secondLargestElement;
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}
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}
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@@ -1,22 +0,0 @@
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package com.baeldung.array;
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import java.util.Arrays;
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public class FindElementInArray {
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public static boolean findGivenElementInArrayWithoutUsingStream(int[] array, int element) {
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boolean actualResult = false;
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for (int index = 0; index < array.length; index++) {
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if (element == array[index]) {
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actualResult = true;
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break;
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}
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}
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return actualResult;
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}
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public static boolean findGivenElementInArrayUsingStream(int[] array, int element) {
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return Arrays.stream(array).filter(x -> element == x).findFirst().isPresent();
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}
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}
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@@ -1,49 +0,0 @@
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package com.baeldung.array;
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import java.util.Arrays;
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import java.util.Scanner;
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public class JaggedArray {
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int[][] shortHandFormInitialization() {
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int[][] jaggedArr = { { 1, 2 }, { 3, 4, 5 }, { 6, 7, 8, 9 } };
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return jaggedArr;
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}
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int[][] declarationAndThenInitialization() {
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int[][] jaggedArr = new int[3][];
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jaggedArr[0] = new int[] { 1, 2 };
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jaggedArr[1] = new int[] { 3, 4, 5 };
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jaggedArr[2] = new int[] { 6, 7, 8, 9 };
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return jaggedArr;
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}
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int[][] declarationAndThenInitializationUsingUserInputs() {
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int[][] jaggedArr = new int[3][];
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jaggedArr[0] = new int[2];
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jaggedArr[1] = new int[3];
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jaggedArr[2] = new int[4];
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initializeElements(jaggedArr);
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return jaggedArr;
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}
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void initializeElements(int[][] jaggedArr) {
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Scanner sc = new Scanner(System.in);
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for (int outer = 0; outer < jaggedArr.length; outer++) {
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for (int inner = 0; inner < jaggedArr[outer].length; inner++) {
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jaggedArr[outer][inner] = sc.nextInt();
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}
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}
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}
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void printElements(int[][] jaggedArr) {
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for (int index = 0; index < jaggedArr.length; index++) {
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System.out.println(Arrays.toString(jaggedArr[index]));
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}
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||||
}
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int[] getElementAtGivenIndex(int[][] jaggedArr, int index) {
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return jaggedArr[index];
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}
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}
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@@ -1,96 +0,0 @@
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package com.baeldung.array;
|
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|
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import org.openjdk.jmh.annotations.*;
|
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|
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import java.util.*;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
|
||||
@BenchmarkMode(Mode.AverageTime)
|
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@Warmup(iterations = 5)
|
||||
@OutputTimeUnit(TimeUnit.MICROSECONDS)
|
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public class SearchArrayUnitTest {
|
||||
|
||||
@State(Scope.Benchmark)
|
||||
public static class SearchData {
|
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static int count = 1000;
|
||||
static String[] strings = seedArray(1000);
|
||||
}
|
||||
|
||||
|
||||
@Benchmark
|
||||
public void searchArrayLoop() {
|
||||
for (int i = 0; i < SearchData.count; i++) {
|
||||
searchLoop(SearchData.strings, "T");
|
||||
}
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void searchArrayAllocNewList() {
|
||||
for (int i = 0; i < SearchData.count; i++) {
|
||||
searchList(SearchData.strings, "T");
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@Benchmark
|
||||
public void searchArrayAllocNewSet() {
|
||||
for (int i = 0; i < SearchData.count; i++) {
|
||||
searchSet(SearchData.strings, "T");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@Benchmark
|
||||
public void searchArrayReuseList() {
|
||||
List<String> asList = Arrays.asList(SearchData.strings);
|
||||
for (int i = 0; i < SearchData.count; i++) {
|
||||
asList.contains("T");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@Benchmark
|
||||
public void searchArrayReuseSet() {
|
||||
Set<String> asSet = new HashSet<>(Arrays.asList(SearchData.strings));
|
||||
for (int i = 0; i < SearchData.count; i++) {
|
||||
asSet.contains("T");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@Benchmark
|
||||
public void searchArrayBinarySearch() {
|
||||
Arrays.sort(SearchData.strings);
|
||||
for (int i = 0; i < SearchData.count; i++) {
|
||||
Arrays.binarySearch(SearchData.strings, "T");
|
||||
}
|
||||
}
|
||||
|
||||
private boolean searchList(String[] strings, String searchString) {
|
||||
return Arrays.asList(strings).contains(searchString);
|
||||
}
|
||||
|
||||
private boolean searchSet(String[] strings, String searchString) {
|
||||
Set<String> set = new HashSet<>(Arrays.asList(strings));
|
||||
return set.contains(searchString);
|
||||
}
|
||||
|
||||
private boolean searchLoop(String[] strings, String searchString) {
|
||||
for (String s : strings) {
|
||||
if (s.equals(searchString))
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
private static String[] seedArray(int length) {
|
||||
String[] strings = new String[length];
|
||||
Random random = new Random();
|
||||
for (int i = 0; i < length; i++)
|
||||
{
|
||||
strings[i] = String.valueOf(random.nextInt());
|
||||
}
|
||||
return strings;
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,31 +0,0 @@
|
||||
package com.baeldung.array;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
public class SumAndAverageInArray {
|
||||
|
||||
public static int findSumWithoutUsingStream(int[] array) {
|
||||
int sum = 0;
|
||||
for (int value : array) {
|
||||
sum += value;
|
||||
}
|
||||
return sum;
|
||||
}
|
||||
|
||||
public static int findSumUsingStream(int[] array) {
|
||||
return Arrays.stream(array).sum();
|
||||
}
|
||||
|
||||
public static int findSumUsingStream(Integer[] array) {
|
||||
return Arrays.stream(array).mapToInt(Integer::intValue).sum();
|
||||
}
|
||||
|
||||
public static double findAverageWithoutUsingStream(int[] array) {
|
||||
int sum = findSumWithoutUsingStream(array);
|
||||
return (double) sum / array.length;
|
||||
}
|
||||
|
||||
public static double findAverageUsingStream(int[] array) {
|
||||
return Arrays.stream(array).average().orElse(Double.NaN);
|
||||
}
|
||||
}
|
||||
@@ -1,61 +0,0 @@
|
||||
package com.baeldung.arraycopy.model;
|
||||
|
||||
public class Address implements Cloneable {
|
||||
private String country;
|
||||
private String state;
|
||||
private String city;
|
||||
private String street;
|
||||
private String zipcode;
|
||||
|
||||
public String getCountry() {
|
||||
return country;
|
||||
}
|
||||
|
||||
public void setCountry(String country) {
|
||||
this.country = country;
|
||||
}
|
||||
|
||||
public String getState() {
|
||||
return state;
|
||||
}
|
||||
|
||||
public void setState(String state) {
|
||||
this.state = state;
|
||||
}
|
||||
|
||||
public String getCity() {
|
||||
return city;
|
||||
}
|
||||
|
||||
public void setCity(String city) {
|
||||
this.city = city;
|
||||
}
|
||||
|
||||
public String getStreet() {
|
||||
return street;
|
||||
}
|
||||
|
||||
public void setStreet(String street) {
|
||||
this.street = street;
|
||||
}
|
||||
|
||||
public String getZipcode() {
|
||||
return zipcode;
|
||||
}
|
||||
|
||||
public void setZipcode(String zipcode) {
|
||||
this.zipcode = zipcode;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected Object clone() throws CloneNotSupportedException {
|
||||
super.clone();
|
||||
Address address = new Address();
|
||||
address.setCity(this.city);
|
||||
address.setCountry(this.country);
|
||||
address.setState(this.state);
|
||||
address.setStreet(this.street);
|
||||
address.setZipcode(this.zipcode);
|
||||
return address;
|
||||
}
|
||||
}
|
||||
@@ -1,25 +0,0 @@
|
||||
package com.baeldung.arraycopy.model;
|
||||
|
||||
import java.io.Serializable;
|
||||
|
||||
public class Employee implements Serializable {
|
||||
private static final long serialVersionUID = -2454619097207585825L;
|
||||
private int id;
|
||||
private String name;
|
||||
|
||||
public int getId() {
|
||||
return id;
|
||||
}
|
||||
|
||||
public void setId(int id) {
|
||||
this.id = id;
|
||||
}
|
||||
|
||||
public String getName() {
|
||||
return name;
|
||||
}
|
||||
|
||||
public void setName(String name) {
|
||||
this.name = name;
|
||||
}
|
||||
}
|
||||
@@ -1,26 +0,0 @@
|
||||
package com.baeldung.assertion;
|
||||
|
||||
/**
|
||||
* Simple demonstration of using Java assert keyword.
|
||||
*/
|
||||
public class Assertion {
|
||||
|
||||
public static void main(String[] args) {
|
||||
Assertion assertion = new Assertion();
|
||||
assertion.setup();
|
||||
}
|
||||
|
||||
public void setup() {
|
||||
Object conn = getConnection();
|
||||
assert conn != null : "Connection is null";
|
||||
|
||||
// continue with other setup ...
|
||||
}
|
||||
|
||||
// Simulate failure to get a connection; using Object
|
||||
// to avoid dependencies on JDBC or some other heavy
|
||||
// 3rd party library
|
||||
public Object getConnection() {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
@@ -1,23 +0,0 @@
|
||||
package com.baeldung.binding;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
/**
|
||||
* Created by madhumita.g on 25-07-2018.
|
||||
*/
|
||||
public class Animal {
|
||||
|
||||
final static Logger logger = LoggerFactory.getLogger(Animal.class);
|
||||
|
||||
public void makeNoise() {
|
||||
logger.info("generic animal noise");
|
||||
}
|
||||
|
||||
public void makeNoise(Integer repetitions) {
|
||||
while(repetitions != 0) {
|
||||
logger.info("generic animal noise countdown " + repetitions);
|
||||
repetitions -= 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1,43 +0,0 @@
|
||||
package com.baeldung.binding;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
/**
|
||||
* Created by madhumita.g on 25-07-2018.
|
||||
*/
|
||||
public class AnimalActivity {
|
||||
|
||||
final static Logger logger = LoggerFactory.getLogger(AnimalActivity.class);
|
||||
|
||||
|
||||
public static void sleep(Animal animal) {
|
||||
logger.info("Animal is sleeping");
|
||||
}
|
||||
|
||||
public static void sleep(Cat cat) {
|
||||
logger.info("Cat is sleeping");
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
|
||||
Animal animal = new Animal();
|
||||
|
||||
//calling methods of animal object
|
||||
animal.makeNoise();
|
||||
|
||||
animal.makeNoise(3);
|
||||
|
||||
|
||||
//assigning a dog object to reference of type Animal
|
||||
Animal catAnimal = new Cat();
|
||||
|
||||
catAnimal.makeNoise();
|
||||
|
||||
// calling static function
|
||||
AnimalActivity.sleep(catAnimal);
|
||||
|
||||
return;
|
||||
|
||||
}
|
||||
}
|
||||
@@ -1,18 +0,0 @@
|
||||
package com.baeldung.binding;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
/**
|
||||
* Created by madhumita.g on 25-07-2018.
|
||||
*/
|
||||
public class Cat extends Animal {
|
||||
|
||||
final static Logger logger = LoggerFactory.getLogger(Cat.class);
|
||||
|
||||
public void makeNoise() {
|
||||
|
||||
logger.info("meow");
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,138 +0,0 @@
|
||||
package com.baeldung.breakcontinue;
|
||||
|
||||
import java.util.Arrays;
|
||||
import java.util.HashMap;
|
||||
import java.util.Iterator;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
import java.util.Map.Entry;
|
||||
|
||||
/**
|
||||
* @author Santosh
|
||||
*
|
||||
*/
|
||||
public class BreakContinue {
|
||||
|
||||
public static int unlabeledBreak() {
|
||||
String searchName = "Wilson";
|
||||
int counter = 0;
|
||||
List<String> names = Arrays.asList("John", "Peter", "Robert", "Wilson", "Anthony", "Donald", "Richard");
|
||||
|
||||
for (String name : names) {
|
||||
counter++;
|
||||
if (name.equalsIgnoreCase(searchName)) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return counter;
|
||||
}
|
||||
|
||||
public static int unlabeledBreakNestedLoops() {
|
||||
String searchName = "Wilson";
|
||||
int counter = 0;
|
||||
Map<String, List<String>> nameMap = new HashMap<>();
|
||||
nameMap.put("Grade1", Arrays.asList("John", "Peter", "Robert", "Wilson"));
|
||||
nameMap.put("Grade2", Arrays.asList("Anthony", "Donald", "Richard", "Arnold"));
|
||||
nameMap.put("Grade3", Arrays.asList("Wilson", "Michael", "Stephen", "Ryan"));
|
||||
|
||||
Iterator<Entry<String, List<String>>> iterator = nameMap.entrySet()
|
||||
.iterator();
|
||||
Entry<String, List<String>> entry = null;
|
||||
List<String> names = null;
|
||||
while (iterator.hasNext()) {
|
||||
entry = iterator.next();
|
||||
names = entry.getValue();
|
||||
for (String name : names) {
|
||||
if (name.equalsIgnoreCase(searchName)) {
|
||||
counter++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return counter;
|
||||
}
|
||||
|
||||
public static int labeledBreak() {
|
||||
String searchName = "Wilson";
|
||||
int counter = 0;
|
||||
Map<String, List<String>> nameMap = new HashMap<>();
|
||||
nameMap.put("Grade1", Arrays.asList("John", "Peter", "Robert", "Wilson"));
|
||||
nameMap.put("Grade2", Arrays.asList("Anthony", "Donald", "Richard", "Arnold"));
|
||||
nameMap.put("Grade3", Arrays.asList("Wilson", "Michael", "Stephen", "Ryan"));
|
||||
|
||||
Iterator<Entry<String, List<String>>> iterator = nameMap.entrySet()
|
||||
.iterator();
|
||||
Entry<String, List<String>> entry = null;
|
||||
List<String> names = null;
|
||||
compare:
|
||||
while (iterator.hasNext()) {
|
||||
entry = iterator.next();
|
||||
names = entry.getValue();
|
||||
for (String name : names) {
|
||||
if (name.equalsIgnoreCase(searchName)) {
|
||||
counter++;
|
||||
break compare;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return counter;
|
||||
}
|
||||
|
||||
public static int unlabeledContinue() {
|
||||
String searchName = "Wilson";
|
||||
int counter = 0;
|
||||
Map<String, List<String>> nameMap = new HashMap<>();
|
||||
nameMap.put("Grade1", Arrays.asList("John", "Wilson", "Robert", "Wilson"));
|
||||
nameMap.put("Grade2", Arrays.asList("Anthony", "Donald", "Wilson", "Arnold"));
|
||||
nameMap.put("Grade3", Arrays.asList("Wilson", "Michael", "Wilson", "Ryan"));
|
||||
|
||||
Iterator<Entry<String, List<String>>> iterator = nameMap.entrySet()
|
||||
.iterator();
|
||||
Entry<String, List<String>> entry = null;
|
||||
List<String> names = null;
|
||||
while (iterator.hasNext()) {
|
||||
entry = iterator.next();
|
||||
names = entry.getValue();
|
||||
for (String name : names) {
|
||||
if (!name.equalsIgnoreCase(searchName)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
counter++;
|
||||
}
|
||||
}
|
||||
|
||||
return counter;
|
||||
}
|
||||
|
||||
public static int labeledContinue() {
|
||||
String searchName = "Wilson";
|
||||
int counter = 0;
|
||||
Map<String, List<String>> nameMap = new HashMap<>();
|
||||
nameMap.put("Grade1", Arrays.asList("John", "Wilson", "Robert", "Wilson"));
|
||||
nameMap.put("Grade2", Arrays.asList("Anthony", "Donald", "Wilson", "Arnold"));
|
||||
nameMap.put("Grade3", Arrays.asList("Wilson", "Michael", "Wilson", "Ryan"));
|
||||
|
||||
Iterator<Entry<String, List<String>>> iterator = nameMap.entrySet()
|
||||
.iterator();
|
||||
Entry<String, List<String>> entry = null;
|
||||
List<String> names = null;
|
||||
compare:
|
||||
while (iterator.hasNext()) {
|
||||
entry = iterator.next();
|
||||
names = entry.getValue();
|
||||
for (String name : names) {
|
||||
if (name.equalsIgnoreCase(searchName)) {
|
||||
counter++;
|
||||
continue compare;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return counter;
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,13 +0,0 @@
|
||||
package com.baeldung.casting;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
public class Animal {
|
||||
private static final Logger LOGGER = LoggerFactory.getLogger(Animal.class);
|
||||
|
||||
public void eat() {
|
||||
LOGGER.info("animal is eating");
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,23 +0,0 @@
|
||||
package com.baeldung.casting;
|
||||
|
||||
import java.util.List;
|
||||
|
||||
public class AnimalFeeder {
|
||||
|
||||
public void feed(List<Animal> animals) {
|
||||
animals.forEach(animal -> {
|
||||
animal.eat();
|
||||
if (animal instanceof Cat) {
|
||||
((Cat) animal).meow();
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
public void uncheckedFeed(List<Animal> animals) {
|
||||
animals.forEach(animal -> {
|
||||
animal.eat();
|
||||
((Cat) animal).meow();
|
||||
});
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,24 +0,0 @@
|
||||
package com.baeldung.casting;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
public class AnimalFeederGeneric<T> {
|
||||
private Class<T> type;
|
||||
|
||||
public AnimalFeederGeneric(Class<T> type) {
|
||||
this.type = type;
|
||||
}
|
||||
|
||||
public List<T> feed(List<Animal> animals) {
|
||||
List<T> list = new ArrayList<T>();
|
||||
animals.forEach(animal -> {
|
||||
if (type.isInstance(animal)) {
|
||||
T objAsType = type.cast(animal);
|
||||
list.add(objAsType);
|
||||
}
|
||||
});
|
||||
return list;
|
||||
}
|
||||
|
||||
}
|
||||
@@ -1,16 +0,0 @@
|
||||
package com.baeldung.casting;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
public class Cat extends Animal implements Mew {
|
||||
private static final Logger LOGGER = LoggerFactory.getLogger(Cat.class);
|
||||
|
||||
public void eat() {
|
||||
LOGGER.info("cat is eating");
|
||||
}
|
||||
|
||||
public void meow() {
|
||||
LOGGER.info("meow");
|
||||
}
|
||||
}
|
||||
@@ -1,12 +0,0 @@
|
||||
package com.baeldung.casting;
|
||||
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
public class Dog extends Animal {
|
||||
private static final Logger LOGGER = LoggerFactory.getLogger(Dog.class);
|
||||
|
||||
public void eat() {
|
||||
LOGGER.info("dog is eating");
|
||||
}
|
||||
}
|
||||
@@ -1,5 +0,0 @@
|
||||
package com.baeldung.casting;
|
||||
|
||||
public interface Mew {
|
||||
public void meow();
|
||||
}
|
||||
@@ -1,41 +0,0 @@
|
||||
package com.baeldung.chainedexception;
|
||||
|
||||
import com.baeldung.chainedexception.exceptions.GirlFriendOfManagerUpsetException;
|
||||
import com.baeldung.chainedexception.exceptions.ManagerUpsetException;
|
||||
import com.baeldung.chainedexception.exceptions.NoLeaveGrantedException;
|
||||
import com.baeldung.chainedexception.exceptions.TeamLeadUpsetException;
|
||||
|
||||
public class LogWithChain {
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
getLeave();
|
||||
}
|
||||
|
||||
private static void getLeave() throws NoLeaveGrantedException {
|
||||
try {
|
||||
howIsTeamLead();
|
||||
} catch (TeamLeadUpsetException e) {
|
||||
throw new NoLeaveGrantedException("Leave not sanctioned.", e);
|
||||
}
|
||||
}
|
||||
|
||||
private static void howIsTeamLead() throws TeamLeadUpsetException {
|
||||
try {
|
||||
howIsManager();
|
||||
} catch (ManagerUpsetException e) {
|
||||
throw new TeamLeadUpsetException("Team lead is not in good mood", e);
|
||||
}
|
||||
}
|
||||
|
||||
private static void howIsManager() throws ManagerUpsetException {
|
||||
try {
|
||||
howIsGirlFriendOfManager();
|
||||
} catch (GirlFriendOfManagerUpsetException e) {
|
||||
throw new ManagerUpsetException("Manager is in bad mood", e);
|
||||
}
|
||||
}
|
||||
|
||||
private static void howIsGirlFriendOfManager() throws GirlFriendOfManagerUpsetException {
|
||||
throw new GirlFriendOfManagerUpsetException("Girl friend of manager is in bad mood");
|
||||
}
|
||||
}
|
||||
@@ -1,44 +0,0 @@
|
||||
package com.baeldung.chainedexception;
|
||||
|
||||
import com.baeldung.chainedexception.exceptions.GirlFriendOfManagerUpsetException;
|
||||
import com.baeldung.chainedexception.exceptions.ManagerUpsetException;
|
||||
import com.baeldung.chainedexception.exceptions.NoLeaveGrantedException;
|
||||
import com.baeldung.chainedexception.exceptions.TeamLeadUpsetException;
|
||||
|
||||
public class LogWithoutChain {
|
||||
|
||||
public static void main(String[] args) throws Exception {
|
||||
getLeave();
|
||||
}
|
||||
|
||||
private static void getLeave() throws NoLeaveGrantedException {
|
||||
try {
|
||||
howIsTeamLead();
|
||||
} catch (TeamLeadUpsetException e) {
|
||||
e.printStackTrace();
|
||||
throw new NoLeaveGrantedException("Leave not sanctioned.");
|
||||
}
|
||||
}
|
||||
|
||||
private static void howIsTeamLead() throws TeamLeadUpsetException {
|
||||
try {
|
||||
howIsManager();
|
||||
} catch (ManagerUpsetException e) {
|
||||
e.printStackTrace();
|
||||
throw new TeamLeadUpsetException("Team lead is not in good mood");
|
||||
}
|
||||
}
|
||||
|
||||
private static void howIsManager() throws ManagerUpsetException {
|
||||
try {
|
||||
howIsGirlFriendOfManager();
|
||||
} catch (GirlFriendOfManagerUpsetException e) {
|
||||
e.printStackTrace();
|
||||
throw new ManagerUpsetException("Manager is in bad mood");
|
||||
}
|
||||
}
|
||||
|
||||
private static void howIsGirlFriendOfManager() throws GirlFriendOfManagerUpsetException {
|
||||
throw new GirlFriendOfManagerUpsetException("Girl friend of manager is in bad mood");
|
||||
}
|
||||
}
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user