推荐订阅源

案例1

public class Demo {

    public int calc(){
        int a=100;
        int b=200;
        int c=300;
        return(a+b)*c;
    }
    public static void main(String[] args){
         Demo demo = new Demo();
         demo.calc();
    }
}

分析

javap生成

javac Demo.java

javap -v Demo.class