iSharkFly-Open/Java-Tutorials
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'eugenp:master' into master

Browse Source
This commit is contained in:
lsieun
2021-11-02 01:40:07 +08:00
committed by GitHub
parent d3c8cc8a34 789b7267be
commit 664819a5a1
199 changed files with 2783 additions and 431 deletions
Download Patch File Download Diff File Expand all files Collapse all files
algorithms-miscellaneous-5/pom.xml
+1 -2
View File
@@ -37,7 +37,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-commons</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
@@ -53,7 +53,6 @@
<commons-codec.version>1.11</commons-codec.version>
<commons-math3.version>3.6.1</commons-math3.version>
<guava.version>28.1-jre</guava.version>
<junit.platform.version>1.6.0</junit.platform.version>
</properties>
</project>
algorithms-miscellaneous-6/pom.xml
+1 -2
View File
@@ -22,7 +22,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-commons</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
@@ -46,7 +46,6 @@
<properties>
<guava.version>28.1-jre</guava.version>
<org.assertj.core.version>3.9.0</org.assertj.core.version>
<junit.platform.version>1.6.0</junit.platform.version>
<commons-math3.version>3.6.1</commons-math3.version>
</properties>
algorithms-sorting-2/pom.xml
+1 -2
View File
@@ -32,7 +32,7 @@
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit-jupiter-api.version}</version>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -47,7 +47,6 @@
<commons-math3.version>3.6.1</commons-math3.version>
<org.assertj.core.version>3.9.0</org.assertj.core.version>
<commons-codec.version>1.11</commons-codec.version>
<junit-jupiter-api.version>5.3.1</junit-jupiter-api.version>
</properties>
</project>
algorithms-sorting/pom.xml
+1 -2
View File
@@ -33,7 +33,7 @@
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit-jupiter-api.version}</version>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -48,7 +48,6 @@
<commons-math3.version>3.6.1</commons-math3.version>
<org.assertj.core.version>3.9.0</org.assertj.core.version>
<commons-codec.version>1.11</commons-codec.version>
<junit-jupiter-api.version>5.3.1</junit-jupiter-api.version>
</properties>
</project>
apache-poi/src/main/java/com/baeldung/poi/excel/multilinetext/MultilineText.java
+18
View File
@@ -0,0 +1,18 @@
package com.baeldung.poi.excel.multilinetext;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Row;
public class MultilineText {
public void formatMultilineText(Cell cell, int cellNumber) {
cell.getRow()
.setHeightInPoints(cell.getSheet()
.getDefaultRowHeightInPoints() * 2);
CellStyle cellStyle = cell.getSheet()
.getWorkbook()
.createCellStyle();
cellStyle.setWrapText(true);
cell.setCellStyle(cellStyle);
}
}
apache-poi/src/main/resources/com/baeldung/poi/excel/multilinetext/MultilineTextTest.xlsx
BIN
View File
Binary file not shown.
apache-poi/src/test/java/com/baeldung/poi/excel/multilinetext/MultilineTextUnitTest.java
+69
View File
@@ -0,0 +1,69 @@
package com.baeldung.poi.excel.multilinetext;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.file.Paths;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.junit.Before;
import org.junit.Test;
public class MultilineTextUnitTest {
private static String FILE_NAME = "com/baeldung/poi/excel/multilinetext/MultilineTextTest.xlsx";
private static final String NEW_FILE_NAME = "MultilineTextTest_output.xlsx";
private static final int STRING_ROW_INDEX = 1;
private static final int STRING_CELL_INDEX = 0;
private String fileLocation;
@Before
public void setup() throws IOException, URISyntaxException {
fileLocation = Paths.get(ClassLoader.getSystemResource(FILE_NAME)
.toURI())
.toString();
}
@Test
public void givenMultilineTextCell_whenFormated_thenMultilineTextVisible() throws IOException {
Workbook workbook = new XSSFWorkbook(fileLocation);
Sheet sheet = workbook.getSheetAt(0);
sheet.createRow(STRING_ROW_INDEX);
Row row = sheet.getRow(STRING_ROW_INDEX);
Cell cell = row.createCell(STRING_CELL_INDEX);
cell.setCellValue("Hello \n world!");
MultilineText multilineText = new MultilineText();
multilineText.formatMultilineText(cell, STRING_CELL_INDEX);
FileOutputStream outputStream = new FileOutputStream(NEW_FILE_NAME);
workbook.write(outputStream);
outputStream.close();
File file = new File(NEW_FILE_NAME);
FileInputStream fileInputStream = new FileInputStream(file);
Workbook testWorkbook = new XSSFWorkbook(fileInputStream);
assertTrue(row.getHeightInPoints() == testWorkbook.getSheetAt(0)
.getRow(STRING_ROW_INDEX)
.getHeightInPoints());
DataFormatter formatter = new DataFormatter();
assertEquals("Hello \n world!", formatter.formatCellValue(testWorkbook.getSheetAt(0)
.getRow(STRING_ROW_INDEX)
.getCell(STRING_CELL_INDEX)));
testWorkbook.close();
fileInputStream.close();
file.delete();
workbook.close();
}
}
apache-shiro/pom.xml
-4
View File
@@ -39,10 +39,6 @@
<scope>runtime</scope>
</dependency>
<!-- spring-sec -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
atomikos/pom.xml
+3 -3
View File
@@ -72,9 +72,9 @@
<version>${derby.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<!-- the JTA API -->
aws-lambda/lambda/pom.xml
+7
View File
@@ -62,6 +62,13 @@
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>${json-simple.version}</version>
<exclusions>
<!-- junit4 dependency is excluded as it should to be resolved from junit-vintage-engine included in parent-modules. -->
<exclusion>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
aws-lambda/shipping-tracker/ShippingFunction/pom.xml
+8 -10
View File
@@ -12,23 +12,17 @@
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.0</version>
<version>${aws-lambda-java-core.version}</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-events</artifactId>
<version>3.1.0</version>
<version>${aws-lambda-java-events.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
<version>${jackson-databind.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
@@ -43,7 +37,7 @@
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.16</version>
<version>${postgresql.version}</version>
</dependency>
</dependencies>
@@ -71,6 +65,10 @@
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<hibernate.version>5.4.21.Final</hibernate.version>
<aws-lambda-java-core.version>1.2.0</aws-lambda-java-core.version>
<aws-lambda-java-events.version>3.1.0</aws-lambda-java-events.version>
<jackson-databind.version>2.11.2</jackson-databind.version>
<postgresql.version>42.2.16</postgresql.version>
</properties>
</project>
aws-lambda/todo-reminder/ToDoFunction/pom.xml
+26 -15
View File
@@ -12,70 +12,70 @@
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.1</version>
<version>${aws-lambda-java-core.version}</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-events</artifactId>
<version>3.6.0</version>
<version>${aws-lambda-java-events.version}</version>
</dependency>
<dependency>
<groupId>uk.org.webcompere</groupId>
<artifactId>lightweight-config</artifactId>
<version>1.1.0</version>
<version>${lightweight-config.version}</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j2</artifactId>
<version>1.2.0</version>
<version>${aws-lambda-java-log4j2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
<version>2.13.2</version>
<version>${log4j-slf4j-impl.version}</version>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-core</artifactId>
<version>11.2</version>
<version>${feign-core.version}</version>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-slf4j</artifactId>
<version>11.2</version>
<version>${feign-core.version}</version>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-gson</artifactId>
<version>11.2</version>
<version>${feign-core.version}</version>
</dependency>
<dependency>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
<version>5.0.1</version>
<version>${guice.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>uk.org.webcompere</groupId>
<artifactId>system-stubs-junit4</artifactId>
<version>1.2.0</version>
<version>${system-stubs-junit4.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>3.3.0</version>
<version>${mockito-core.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>3.19.0</version>
<version>${assertj-core.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
@@ -103,6 +103,17 @@
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<aws-lambda-java-core.version>1.2.1</aws-lambda-java-core.version>
<aws-lambda-java-events.version>3.6.0</aws-lambda-java-events.version>
<lightweight-config.version>1.1.0</lightweight-config.version>
<aws-lambda-java-log4j2.version>1.2.0</aws-lambda-java-log4j2.version>
<log4j-slf4j-impl.version>2.13.2</log4j-slf4j-impl.version>
<feign-core.version>11.2</feign-core.version>
<guice.version>5.0.1</guice.version>
<system-stubs-junit4.version>1.2.0</system-stubs-junit4.version>
<mockito-core.version>3.3.0</mockito-core.version>
<assertj-core.version>3.19.0</assertj-core.version>
<junit-jupiter.version>5.8.1</junit-jupiter.version>
</properties>
</project>
blade/pom.xml
+1
View File
@@ -70,6 +70,7 @@
<artifactId>maven-failsafe-plugin</artifactId>
<version>${maven-failsafe-plugin.version}</version>
<configuration>
<skipITs>true</skipITs>
<includes>
<include>**/*LiveTest.java</include>
</includes>
core-groovy-2/gmavenplus-pom.xml
+2 -3
View File
@@ -33,7 +33,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -95,7 +95,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform-surefire-provider.version}</version>
</dependency>
</dependencies>
<executions>
@@ -165,7 +165,6 @@
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<junit.platform.version>1.0.0</junit.platform.version>
<hsqldb.version>2.4.0</hsqldb.version>
<spock-core.version>1.1-groovy-2.4</spock-core.version>
<commons-lang3.version>3.9</commons-lang3.version>
core-groovy-2/pom.xml
+2 -3
View File
@@ -34,7 +34,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -94,7 +94,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform-surefire-provider.version}</version>
</dependency>
</dependencies>
<executions>
@@ -162,7 +162,6 @@
</repositories>
<properties>
<junit.platform.version>1.0.0</junit.platform.version>
<hsqldb.version>2.4.0</hsqldb.version>
<spock-core.version>1.1-groovy-2.4</spock-core.version>
<groovy-wslite.version>1.1.3</groovy-wslite.version>
core-groovy-collections/pom.xml
+2 -3
View File
@@ -39,7 +39,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -80,7 +80,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform-surefire-provider.version}</version>
</dependency>
</dependencies>
<executions>
@@ -119,7 +119,6 @@
</repositories>
<properties>
<junit.platform.version>1.0.0</junit.platform.version>
<groovy.version>2.5.6</groovy.version>
<groovy-all.version>2.5.6</groovy-all.version>
<groovy-sql.version>2.5.6</groovy-sql.version>
core-groovy-strings/pom.xml
+2 -3
View File
@@ -39,7 +39,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -80,7 +80,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform-surefire-provider.version}</version>
</dependency>
</dependencies>
<executions>
@@ -109,7 +109,6 @@
</repositories>
<properties>
<junit.platform.version>1.0.0</junit.platform.version>
<groovy.version>2.5.6</groovy.version>
<groovy-all.version>2.5.6</groovy-all.version>
<groovy-sql.version>2.5.6</groovy-sql.version>
core-groovy/pom.xml
+2 -3
View File
@@ -39,7 +39,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -80,7 +80,7 @@
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>${junit.platform.version}</version>
<version>${junit-platform-surefire-provider.version}</version>
</dependency>
</dependencies>
<executions>
@@ -109,7 +109,6 @@
</repositories>
<properties>
<junit.platform.version>1.0.0</junit.platform.version>
<groovy.version>2.5.6</groovy.version>
<groovy-all.version>2.5.6</groovy-all.version>
<groovy-sql.version>2.5.6</groovy-sql.version>
core-java-modules/core-java-11-2/pom.xml
+3 -4
View File
@@ -35,19 +35,19 @@
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit.jupiter.version}</version>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-params</artifactId>
<version>${junit.jupiter.version}</version>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.jupiter.version}</version>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
@@ -106,7 +106,6 @@
<maven.compiler.source.version>11</maven.compiler.source.version>
<maven.compiler.target.version>11</maven.compiler.target.version>
<guava.version>29.0-jre</guava.version>
<junit.jupiter.version>5.7.0</junit.jupiter.version>
<assertj.version>3.17.2</assertj.version>
<mockserver.version>5.11.1</mockserver.version>
<commons-lang3.version>3.12.0</commons-lang3.version>
core-java-modules/core-java-17/README.md
+3
View File
@@ -0,0 +1,3 @@
### Relevant articles:
- [Pattern Matching for Switch](https://www.baeldung.com/java-switch-pattern-matching)
core-java-modules/core-java-17/pom.xml
+81
View File
@@ -0,0 +1,81 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-17</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-17</name>
<packaging>jar</packaging>
<url>http://maven.apache.org</url>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../../</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit-jupiter.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<release>${maven.compiler.release}</release>
<compilerArgs>--enable-preview</compilerArgs>
<source>${maven.compiler.source.version}</source>
<target>${maven.compiler.target.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire.plugin.version}</version>
<configuration>
<argLine>--enable-preview</argLine>
<forkCount>1</forkCount>
</configuration>
<dependencies>
<dependency>
<groupId>org.apache.maven.surefire</groupId>
<artifactId>surefire-api</artifactId>
<version>${surefire.plugin.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
<properties>
<maven.compiler.source.version>17</maven.compiler.source.version>
<maven.compiler.target.version>17</maven.compiler.target.version>
<maven.compiler.release>17</maven.compiler.release>
<maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
<surefire.plugin.version>3.0.0-M5</surefire.plugin.version>
<assertj.version>3.17.2</assertj.version>
</properties>
</project>
core-java-modules/core-java-17/src/main/java/com/baeldung/switchpatterns/GuardedPatterns.java
+25
View File
@@ -0,0 +1,25 @@
package com.baeldung.switchpatterns;
public class GuardedPatterns {
static double getDoubleValueUsingIf(Object o) {
return switch (o) {
case String s -> {
if (s.length() > 0) {
yield Double.parseDouble(s);
} else {
yield 0d;
}
}
default -> 0d;
};
}
static double getDoubleValueUsingGuardedPatterns(Object o) {
return switch (o) {
case String s && s.length() > 0 -> Double.parseDouble(s);
default -> 0d;
};
}
}
core-java-modules/core-java-17/src/main/java/com/baeldung/switchpatterns/HandlingNullValues.java
+20
View File
@@ -0,0 +1,20 @@
package com.baeldung.switchpatterns;
public class HandlingNullValues {
static double getDoubleUsingSwitchNullCase(Object o) {
return switch (o) {
case String s -> Double.parseDouble(s);
case null -> 0d;
default -> 0d;
};
}
static double getDoubleUsingSwitchTotalType(Object o) {
return switch (o) {
case String s -> Double.parseDouble(s);
case Object ob -> 0d;
};
}
}
core-java-modules/core-java-17/src/main/java/com/baeldung/switchpatterns/ParenthesizedPatterns.java
+29
View File
@@ -0,0 +1,29 @@
package com.baeldung.switchpatterns;
public class ParenthesizedPatterns {
static double getDoubleValueUsingIf(Object o) {
return switch (o) {
case String s -> {
if (s.length() > 0) {
if (s.contains("#") || s.contains("@")) {
yield 0d;
} else {
yield Double.parseDouble(s);
}
} else {
yield 0d;
}
}
default -> 0d;
};
}
static double getDoubleValueUsingParenthesizedPatterns(Object o) {
return switch (o) {
case String s && s.length() > 0 && !(s.contains("#") || s.contains("@")) -> Double.parseDouble(s);
default -> 0d;
};
}
}
core-java-modules/core-java-17/src/main/java/com/baeldung/switchpatterns/PatternMatching.java
+14
View File
@@ -0,0 +1,14 @@
package com.baeldung.switchpatterns;
public class PatternMatching {
public static void main(String[] args) {
Object o = args[0];
if (o instanceof String s) {
System.out.printf("Object is a string %s", s);
} else if(o instanceof Number n) {
System.out.printf("Object is a number %n", n);
}
}
}
core-java-modules/core-java-17/src/main/java/com/baeldung/switchpatterns/SwitchStatement.java
+14
View File
@@ -0,0 +1,14 @@
package com.baeldung.switchpatterns;
public class SwitchStatement {
public static void main(String[] args) {
final String b = "B";
switch (args[0]) {
case "A" -> System.out.println("Parameter is A");
case b -> System.out.println("Parameter is b");
default -> System.out.println("Parameter is unknown");
};
}
}
core-java-modules/core-java-17/src/main/java/com/baeldung/switchpatterns/TypePatterns.java
+30
View File
@@ -0,0 +1,30 @@
package com.baeldung.switchpatterns;
public class TypePatterns {
static double getDoubleUsingIf(Object o) {
double result;
if (o instanceof Integer) {
result = ((Integer) o).doubleValue();
} else if (o instanceof Float) {
result = ((Float) o).doubleValue();
} else if (o instanceof String) {
result = Double.parseDouble(((String) o));
} else {
result = 0d;
}
return result;
}
static double getDoubleUsingSwitch(Object o) {
return switch (o) {
case Integer i -> i.doubleValue();
case Float f -> f.doubleValue();
case String s -> Double.parseDouble(s);
default -> 0d;
};
}
}
core-java-modules/core-java-17/src/test/java/com/baeldung/switchpatterns/GuardedPatternsUnitTest.java
+30
View File
@@ -0,0 +1,30 @@
package com.baeldung.switchpatterns;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static com.baeldung.switchpatterns.GuardedPatterns.*;
class GuardedPatternsUnitTest {
@Test
void givenIfImplementation_whenUsingEmptyString_thenDoubleIsReturned() {
assertEquals(0d, getDoubleValueUsingIf(""));
}
@Test
void givenIfImplementation_whenUsingNonEmptyString_thenDoubleIsReturned() {
assertEquals(10d, getDoubleValueUsingIf("10"));
}
@Test
void givenPatternsImplementation_whenUsingEmptyString_thenDoubleIsReturned() {
assertEquals(0d, getDoubleValueUsingGuardedPatterns(""));
}
@Test
void givenPatternsImplementation_whenUsingNonEmptyString_thenDoubleIsReturned() {
assertEquals(10d, getDoubleValueUsingGuardedPatterns("10"));
}
}
core-java-modules/core-java-17/src/test/java/com/baeldung/switchpatterns/HandlingNullValuesUnitTest.java
+30
View File
@@ -0,0 +1,30 @@
package com.baeldung.switchpatterns;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static com.baeldung.switchpatterns.HandlingNullValues.*;
class HandlingNullValuesUnitTest {
@Test
void givenNullCaseInSwitch_whenUsingStringAsArgument_thenDoubleIsReturned() {
assertEquals(10d, getDoubleUsingSwitchNullCase("10"));
}
@Test
void givenTotalTypeInSwitch_whenUsingNullArgument_thenDoubleIsReturned() {
assertEquals(0d, getDoubleUsingSwitchNullCase(null));
}
@Test
void givenTotalTypeInSwitch_whenUsingStringAsArgument_thenDoubleIsReturned() {
assertEquals(10d, getDoubleUsingSwitchTotalType("10"));
}
@Test
void givenNullCaseInSwitch_whenUsingNullArgument_thenDoubleIsReturned() {
assertEquals(0d, getDoubleUsingSwitchTotalType(null));
}
}
core-java-modules/core-java-17/src/test/java/com/baeldung/switchpatterns/ParenthesizedPatternsUnitTest.java
+40
View File
@@ -0,0 +1,40 @@
package com.baeldung.switchpatterns;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static com.baeldung.switchpatterns.ParenthesizedPatterns.*;
class ParenthesizedPatternsUnitTest {
@Test
void givenIfImplementation_whenUsingEmptyString_thenDoubleIsReturned() {
assertEquals(0d, getDoubleValueUsingIf(""));
}
@Test
void givenIfImplementation_whenUsingNonEmptyString_thenDoubleIsReturned() {
assertEquals(10d, getDoubleValueUsingIf("10"));
}
@Test
void givenIfImplementation_whenStringContainsSpecialChar_thenDoubleIsReturned() {
assertEquals(0d, getDoubleValueUsingIf("@10"));
}
@Test
void givenPatternsImplementation_whenUsingEmptyString_thenDoubleIsReturned() {
assertEquals(0d, getDoubleValueUsingParenthesizedPatterns(""));
}
@Test
void givenPatternsImplementation_whenUsingNonEmptyString_thenDoubleIsReturned() {
assertEquals(10d, getDoubleValueUsingParenthesizedPatterns("10"));
}
@Test
void givenPatternsImplementation_whenStringContainsSpecialChar_thenDoubleIsReturned() {
assertEquals(0d, getDoubleValueUsingParenthesizedPatterns("@10"));
}
}

Some files were not shown because too many files have changed in this diff Show More