andgomes

public class PodeCrer {}

andgomes

package com.andgomes;

public class App {
    public static void main(String[] args) {
        System.out.println("Hello World!"); 
    }  
}

andgomes

package com.andgomes;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

public class AppTest extends TestCase {
    
    public AppTest(String testName) {
        super(testName);  

andgomes

package com.andgomes;

public class LambdaExpressionDemo {

    public static void main(String[] args) {
      
        MyFunc myFunc = () -> "Hello World!";
        System.out.println(myFunc.func());
      
    }  

andgomes

<project ...>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.5.1</version>
        <configuration>
          <source>1.8</source>

andgomes

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.andgomes</groupId>
  <artifactId>simple-project</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>simple-project</name>

andgomes

<project ...>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.5.1</version>
        <configuration>
          <source>1.7</source>

andgomes

<project ...>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-clean-plugin</artifactId>
        <version>3.0.0</version>
        <executions>
          <execution>

andgomes

<project ...>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <version>1.8</version>
        <executions>
          <execution>

andgomes

<project ...>
  ...
  <build>
    <plugins>
      ...
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-clean-plugin</artifactId>
        <version>3.0.0</version>
        <configuration>