public static void change1() {
int t = 0;
t = a;
a = b;
b = t;
System.out.println("a= " + a + "/tb= " + b);
}
public static void change2() {
a = a + b;
b = a - b;
a = a - b;
System.out.println("a= " + a + "/tb= " + b);
}
public static void change3() {
a = a ^ b;
b = a ^ b;
a = a ^ b;
System.out.println("a= " + a + "/tb= " + b);
}
public static void change4() {
a = b + (b = a) * 0;
System.out.println("a= " + a + "/tb= " + b);
}
public static void main(String[] args) {
change1();
// change2();
// change3();
// change4();
}
}