Java 小白 拼接

    private static void fun7() {
        int a = 10;
        int b = 20;
        System.out.println(a+"+"+b+"="+(a+b));
        //拼接
        System.out.println(String.format("%d+%d=%d",a,b,(a+b)));
    }
public class homework {
    public static void main(String[] args) {
       fun7();
    }
 }