【JVM】-NO.110.JVM.1 -【hsdis jitwatch 生成查看汇编代码】

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Style：Mac

Series：Java

Since：2018-09-10

End：2018-09-10

Total Hours：1

Degree Of Diffculty：5

Degree Of Mastery：5

Practical Level：5

Desired Goal：5

Archieve Goal：3

Gerneral Evaluation：3

Writer:kingdelee

Related Links：

http://www.cnblogs.com/kingdelee/

http://yunjiechao-163-com.iteye.com/blog/2386423

https://blog.csdn.net/unei66/article/details/26477629

https://blog.csdn.net/hengyunabc/article/details/26898657

1.需要下载编译，如果编译失败，可以下载已经编译好的

https://www.chrisnewland.com/updated-instructions-for-building-hsdis-on-osx-417

最终要将 hsdis-amd64.dylib

存放在以下目录：

/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home/jre/lib/server

public class DynamicDispatch {//static abstract class Human {
//protected abstract void sayHello();
//}static class Human {
protected void sayHello(){
System.out.println("hello");
}
}static class Man extends Human {
@Override
protected void sayHello() {
System.out.println("man say hello");
}
}static class Woman extends Human {
@Override
protected void sayHello() {
System.out.println("woman say hello");
}
}public static void main(String[] args) {
Human man = new Man();
Human woman = new Woman();
man.sayHello();
woman.sayHello();
man = new Woman();
man.sayHello();
}
}