/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	private static int foo = 0;
	private static int returnStuff() {
	    return foo++;
	}
 
	private static boolean bar = false;
	private static boolean returnStuff2() {
		boolean beforeChange = bar;
		bar = !bar;
		return beforeChange;
	}
 
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println("value before:     " + foo);
		System.out.println("returned:         " + returnStuff());
		System.out.println("value afterwards: " + foo);
 
		System.out.println("value before:     " + bar);
		System.out.println("returned:         " + returnStuff2());
		System.out.println("value afterwards: " + bar);
	}
}

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