Java-简单的交换

非常简单

package rydttdg;

public class java09 {
	public static void main(String[] args) {
		int a=49;
		int b=52;
		int temp;
		temp=a;
		a=b;
		b=temp;
		System.out.println("a="+a);
		System.out.println("b="+b);
    }
}