HelloWorld.java

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

"Hello World"-Beispiel bei GitHub

public class Foo {
	//
	// Variables
	//
 
	private String foo;
	private String bar;
 
	//
	// Constructor
	//
 
	public Foo(String foo) {
		this(foo, "World");
	}
 
	public Foo(String foo, String bar) {
		this.foo	= foo;
		this.bar	= bar;
	}
}

int number = Integer.parseInt("0");

Collection<String> phrases = foo.getCollectionOfString();
 
for (String phrase : phrases) {
	// Code
}

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