[Java] Simple Swap Code

public class a {
public static void main(String[] args) {


int a=1;
int b=2;


System.out.println("(a   b)="+"("+a+"   "+b+")");


int temp=b;
b=a;
a=temp;
System.out.println("after swap...");
System.out.println("(a   b)="+"("+a+"   "+b+")");
}
}