动态方法调用秘密武器 —— invokedynamic 指令解读 - MethodHandle

原文：https://juejin.im/book/5c25811a6fb9a049ec6b23ee/section/5ccc66dd518825403b5975fb

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;

public class Foo {
    public void print(String s, String args1) {
        System.out.println("hello, " + s + " ^^^ " + args1);
    }

    public static void main(String[] args) throws Throwable {
        Foo foo = new Foo();

//        MethodType methodType = MethodType.methodType(void.class, String.class);
        MethodType methodType = MethodType.methodType(void.class, new Class<?>[]{String.class, String.class});
        MethodHandle methodHandle = MethodHandles.lookup().findVirtual(Foo.class, "print", methodType);
//        methodHandle.invoke(foo, "world");
        methodHandle.invoke(foo, "world", "hahaha!");
    }
}