java - How to invoke a method by a string in singleton -

i have singleton class, string method's name, , want invoke method class.

class foo {    private static foo instance;    private string name;    private foo() { }    public static getinstance() {       if(instance == null) instance = new foo();       return instance;    }    public foo setname(string name) {       this.name = name;       return this;    }    private void bar() {       system.out.println("a");    }    public void execute() {       // invoke "name" method here    } }  foo.getinstance().setname("bar").execute(); 

how can this?

use foo.getclass().getmethod(name, null).invoke(this, null).

you'll need change second parameter getmethod if have several methods same name different signatures, , invoke if method accepts parameters.