JAVA-12098: Moved core-groovy inside core-groovy-modules

2022-05-25 20:12:57 +05:30
parent 2525fd7675
commit 68aebad05e
53 changed files with 1 additions and 1 deletions
@@ -0,0 +1 @@
+/src/main/resources/ioSerializedObject.txt
@@ -0,0 +1,17 @@
+# Core Groovy
+
+This module contains articles about core Groovy concepts
+
+## Relevant articles:
+
+- [JDBC with Groovy](https://www.baeldung.com/jdbc-groovy)
+- [Working with JSON in Groovy](https://www.baeldung.com/groovy-json)
+- [Reading a File in Groovy](https://www.baeldung.com/groovy-file-read)
+- [Types of Strings in Groovy](https://www.baeldung.com/groovy-strings)
+- [An Introduction to Traits in Groovy](https://www.baeldung.com/groovy-traits)
+- [Closures in Groovy](https://www.baeldung.com/groovy-closures)
+- [Converting a String to a Date in Groovy](https://www.baeldung.com/groovy-string-to-date)
+- [Guide to I/O in Groovy](https://www.baeldung.com/groovy-io)
+- [Convert String to Integer in Groovy](https://www.baeldung.com/groovy-convert-string-to-integer)
+- [Groovy Variable Scope](https://www.baeldung.com/groovy/variable-scope)
+- [[More -->]](/core-groovy-2)
@@ -0,0 +1,13 @@
+group 'com.baeldung'
+version '1.0-SNAPSHOT'
+
+apply plugin: 'groovy'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile 'org.codehaus.groovy:groovy-all:2.4.13'
+    testCompile 'org.spockframework:spock-core:1.1-groovy-2.4'
+}
@@ -0,0 +1,120 @@
+<?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-groovy</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <name>core-groovy</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>core-groovy-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy</artifactId>
+            <version>${groovy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-all</artifactId>
+            <version>${groovy-all.version}</version>
+            <type>pom</type>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-dateutil</artifactId>
+            <version>${groovy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.groovy</groupId>
+            <artifactId>groovy-sql</artifactId>
+            <version>${groovy-sql.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit-platform.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hsqldb</groupId>
+            <artifactId>hsqldb</artifactId>
+            <version>${hsqldb.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.spockframework</groupId>
+            <artifactId>spock-core</artifactId>
+            <version>${spock-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.gmavenplus</groupId>
+                <artifactId>gmavenplus-plugin</artifactId>
+                <version>${gmavenplus-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>addSources</goal>
+                            <goal>addTestSources</goal>
+                            <goal>compile</goal>
+                            <goal>compileTests</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-failsafe-plugin</artifactId>
+                <version>${maven-failsafe-plugin.version}</version>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.junit.platform</groupId>
+                        <artifactId>junit-platform-surefire-provider</artifactId>
+                        <version>${junit-platform-surefire-provider.version}</version>
+                    </dependency>
+                </dependencies>
+                <executions>
+                    <execution>
+                        <id>junit5</id>
+                        <goals>
+                            <goal>integration-test</goal>
+                            <goal>verify</goal>
+                        </goals>
+                        <configuration>
+                            <includes>
+                                <include>**/*Test5.java</include>
+                            </includes>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <repositories>
+        <repository>
+            <id>central</id>
+            <url>https://jcenter.bintray.com</url>
+        </repository>
+    </repositories>
+
+    <properties>
+        <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>
+        <hsqldb.version>2.4.0</hsqldb.version>
+        <spock-core.version>1.1-groovy-2.4</spock-core.version>
+        <gmavenplus-plugin.version>1.6</gmavenplus-plugin.version>
+    </properties>
+
+</project>
@@ -0,0 +1,87 @@
+package com.baeldung.closures
+
+class Closures {
+    
+    def printWelcome = {
+        println "Welcome to Closures!"
+    }
+    
+    def print = { name ->
+        println name
+    }
+    
+    def formatToLowerCase(name) {
+        return name.toLowerCase()
+    }
+    def formatToLowerCaseClosure = { name ->
+        return name.toLowerCase()
+    }
+    
+    def count=0
+    
+    def increaseCount = {
+        count++
+    }
+    
+    def greet = {
+        return "Hello! ${it}"
+    }
+   
+    def multiply = { x, y ->
+        return x*y
+    }
+    
+    def calculate = {int x, int y, String operation ->
+        
+        //log closure
+        def log = {
+            println "Performing $it"
+        }
+        
+        def result = 0    
+        switch(operation) {
+            case "ADD":
+                log("Addition")
+                result = x+y
+                break
+            case "SUB":
+                log("Subtraction")
+                result = x-y
+                break
+            case "MUL":
+                log("Multiplication")
+                result = x*y
+                break
+            case "DIV":
+                log("Division")
+                result = x/y
+                break
+        }
+        return result
+    }
+    
+    def addAll = { int... args ->
+        return args.sum()
+    }
+    
+    def volume(Closure areaCalculator, int... dimensions) {
+        if(dimensions.size() == 3) {
+            
+            //consider dimension[0] = length, dimension[1] = breadth, dimension[2] = height
+            //for cube and cuboid
+            return areaCalculator(dimensions[0], dimensions[1]) * dimensions[2]
+        } else if(dimensions.size() == 2) {
+            
+            //consider dimension[0] = radius, dimension[1] = height
+            //for cylinder and cone
+            return areaCalculator(dimensions[0]) * dimensions[1]
+        } else if(dimensions.size() == 1) {
+            
+            //consider dimension[0] = radius
+            //for sphere
+            return areaCalculator(dimensions[0]) * dimensions[0]
+        }
+        
+    }
+     
+}
@@ -0,0 +1,6 @@
+package com.baeldung.closures
+
+class Employee {
+    
+    String fullName
+}
@@ -0,0 +1,107 @@
+package com.baeldung.file
+
+class ReadFile {
+
+    /**
+     * reads file content line by line using withReader and reader.readLine
+     * @param filePath
+     * @return
+     */
+    int readFileLineByLine(String filePath) {
+        File file = new File(filePath)
+        def line, noOfLines = 0;
+        file.withReader { reader ->
+            while ((line = reader.readLine())!=null)
+            {
+                println "${line}"
+                noOfLines++
+            }
+        }
+        return noOfLines
+    }
+
+    /**
+     * reads file content in list of lines
+     * @param filePath
+     * @return
+     */
+    List<String> readFileInList(String filePath) {
+        File file = new File(filePath)
+        def lines = file.readLines()
+        return lines
+    }
+
+    /**
+     * reads file content in string using File.text
+     * @param filePath
+     * @return
+     */
+    String readFileString(String filePath) {
+        File file = new File(filePath)
+        String fileContent = file.text
+        return fileContent
+    }
+
+    /**
+     * reads file content in string with encoding using File.getText
+     * @param filePath
+     * @return
+     */
+    String readFileStringWithCharset(String filePath) {
+        File file = new File(filePath)
+        String utf8Content = file.getText("UTF-8")
+        return utf8Content
+    }
+
+    /**
+     * reads content of binary file and returns byte array
+     * @param filePath
+     * @return
+     */
+    byte[] readBinaryFile(String filePath) {
+        File file = new File(filePath)
+        byte[] binaryContent = file.bytes
+        return binaryContent
+    }
+    
+    /**
+     * More Examples of reading a file 
+     * @return
+     */
+    def moreExamples() {
+        
+        //with reader with utf-8
+        new File("src/main/resources/utf8Content.html").withReader('UTF-8') { reader ->
+            def line
+            while ((line = reader.readLine())!=null) { 
+                println "${line}"
+            }
+        }
+        
+        //collect api
+        def list = new File("src/main/resources/fileContent.txt").collect {it}
+                
+        //as operator
+        def array = new File("src/main/resources/fileContent.txt") as String[]
+              
+        //eachline  
+        new File("src/main/resources/fileContent.txt").eachLine { line ->
+            println line
+        }
+        
+        //newInputStream with eachLine
+        def is = new File("src/main/resources/fileContent.txt").newInputStream()
+        is.eachLine {
+            println it
+        }
+        is.close()
+        
+        //withInputStream
+        new File("src/main/resources/fileContent.txt").withInputStream { stream ->
+            stream.eachLine { line ->
+                println line
+            }
+        }
+    }
+
+}
@@ -0,0 +1,8 @@
+package com.baeldung.io
+
+class Task implements Serializable {
+    String description
+    Date startDate
+    Date dueDate
+    int status
+}
@@ -0,0 +1,7 @@
+package com.baeldung.json
+
+class Account {
+    String id
+    BigDecimal value
+    Date createdAt
+}
@@ -0,0 +1,27 @@
+package com.baeldung.json
+
+import groovy.json.JsonOutput
+import groovy.json.JsonParserType
+import groovy.json.JsonSlurper
+
+class JsonParser {
+
+    Account toObject(String json) {
+        JsonSlurper jsonSlurper = new JsonSlurper()
+        jsonSlurper.parseText(json) as Account
+    }
+
+    Account toObjectWithIndexOverlay(String json) {
+        JsonSlurper jsonSlurper = new JsonSlurper(type: JsonParserType.INDEX_OVERLAY)
+        jsonSlurper.parseText(json) as Account
+    }
+
+    String toJson(Account account) {
+        JsonOutput.toJson(account)
+    }
+
+    String prettyfy(String json) {
+        JsonOutput.prettyPrint(json)
+    }
+
+}
@@ -0,0 +1,26 @@
+package com.baeldung.scopes
+
+import java.util.logging.Logger
+
+x = 200
+logger = Logger.getLogger("Scopes.groovy")
+
+def getGlobalResult() {
+    logger.info(x.toString())
+    return 1 + x
+}
+
+def defineGlobalVariable() {
+    z = 234
+    logger = Logger.getLogger("Scopes.groovy")
+    logger.info(z.toString())
+}
+
+logger.info("- Global variable")
+logger.info(x.toString())
+logger.info("- Access global variable from inside function")
+logger.info(getGlobalResult().toString())
+logger.info("- function called to create variable")
+defineGlobalVariable()
+logger.info("- Variable created inside a function")
+logger.info(z.toString())
@@ -0,0 +1,21 @@
+package com.baeldung.scopes
+
+import java.util.logging.Logger
+
+logger = Logger.getLogger("ScopesFail.groovy")
+
+y = 2
+
+def fLocal() {
+    def q = 333
+    println(q)
+    q
+}
+
+fLocal()
+
+logger.info("- Value of the created variable")
+logger.info(fLocal())
+logger.info("- Local variable doesn't exist outside")
+logger.info(q.toString())
+
@@ -0,0 +1,15 @@
+package com.baeldung.scopes
+
+import java.util.logging.Logger
+
+logger = Logger.getLogger("ScopesFailNoPrint.groovy")
+
+y = 2
+
+def fLocal() {
+    def q = 333
+    println(q)
+    q
+}
+
+logger.info(y.toString())
@@ -0,0 +1,43 @@
+package com.baeldung.strings;
+
+class Concatenate {
+    String first = 'Hello'
+    String last = 'Groovy'
+  
+    String doSimpleConcat() {
+        return 'My name is ' + first + ' ' + last
+    }
+
+    String doConcatUsingGString() {
+        return "My name is $first $last"
+    }
+
+    String doConcatUsingGStringClosures() {
+        return "My name is ${-> first} ${-> last}"
+    }
+
+    String doConcatUsingStringConcatMethod() {
+        return 'My name is '.concat(first).concat(' ').concat(last)
+    }
+
+    String doConcatUsingLeftShiftOperator() {
+        return 'My name is ' << first << ' ' << last
+    }
+    
+    String doConcatUsingArrayJoinMethod() {
+        return ['My name is', first, last].join(' ')
+    }
+
+    String doConcatUsingArrayInjectMethod() {
+        return  [first,' ', last]
+          .inject(new StringBuffer('My name is '), { initial, name -> initial.append(name); return initial }).toString()
+    }
+ 
+    String doConcatUsingStringBuilder() {
+        return new StringBuilder().append('My name is ').append(first).append(' ').append(last)
+    }
+
+    String doConcatUsingStringBuffer() {
+        return new StringBuffer().append('My name is ').append(first).append(' ').append(last)
+    }
+}
@@ -0,0 +1,8 @@
+package com.baeldung.traits
+
+trait AnimalTrait {
+    
+    String basicBehavior() {
+        return "Animalistic!!"
+    }
+}
@@ -0,0 +1,3 @@
+package com.baeldung
+
+class Car implements VehicleTrait {}
@@ -0,0 +1,9 @@
+package com.baeldung.traits
+
+class Dog implements WalkingTrait, SpeakingTrait {
+     
+    String speakAndWalk() {
+        WalkingTrait.super.speakAndWalk()
+    }
+    
+}
@@ -0,0 +1,12 @@
+package com.baeldung.traits
+
+class Employee implements UserTrait {
+    
+    String name() {
+        return 'Bob'
+    }
+    
+    String lastName() {
+        return "Marley"
+    }
+}
@@ -0,0 +1,6 @@
+package com.baeldung.traits
+
+interface Human {
+    
+    String lastName()
+}
@@ -0,0 +1,13 @@
+package com.baeldung.traits
+
+trait SpeakingTrait {
+    
+    String basicAbility() {
+        return "Speaking!!"
+    }
+    
+    String speakAndWalk() {
+        return "Speak and walk!!"
+    }
+    
+}
@@ -0,0 +1,36 @@
+package com.baeldung.traits
+
+trait UserTrait implements Human {
+    
+    String sayHello() {
+        return "Hello!"
+    }
+    
+    abstract String name()
+    
+    String showName() {
+       return "Hello, ${name()}!"
+    }
+
+    private String greetingMessage() {
+        return 'Hello, from a private method!'
+    }
+    
+    String greet() {
+        def msg = greetingMessage()
+        println msg
+        msg
+    }
+    
+    def self() {
+        return this 
+    }
+    
+    String showLastName() {
+        return "Hello, ${lastName()}!"
+    }
+    
+    String email
+    String address
+}
+    
@@ -0,0 +1,9 @@
+package com.baeldung
+
+trait VehicleTrait extends WheelTrait {
+    
+    String showWheels() {
+        return "Num of Wheels $noOfWheels" 
+    }
+    
+}
@@ -0,0 +1,13 @@
+package com.baeldung.traits
+
+trait WalkingTrait {
+    
+    String basicAbility() {
+        return "Walking!!"
+    }
+    
+    String speakAndWalk() {
+        return "Walk and speak!!"
+    }
+    
+}
@@ -0,0 +1,7 @@
+package com.baeldung
+
+trait WheelTrait {
+    
+    int noOfWheels
+    
+}
@@ -0,0 +1,3 @@
+Line 1 : Hello World!!!
+Line 2 : This is a file content.
+Line 3 : String content
@@ -0,0 +1,4 @@
+First line of text
+Second line of text
+Third line of text
+Fourth line of text
@@ -0,0 +1,3 @@
+Line one of output example
+Line two of output example
+Line three of output example
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
--- a/Show More
+++ b/Show More