How to create your class can only be instance once

Kamis, Maret 23, 2006
Try some of this code out!

public class Test {
private static boolean status=false; //before instance

Test() {
if (status) {
System.out.println("Only once instance only");
}else {
status = true; //instance for the first time
System.out.println("Object is instance");

public static void main(String [] args)
Test t1 = new Test();
Test t2 = new Test(); //this will make some effect see by yourself ^^

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