根据方法名称动态调用方法

public class NewClass {
    private static final NewClass newClass = new NewClass();
    
    public  void doTest(String methodName){
        try {
            newClass.getClass().getMethod(methodName, new Class[]{}).invoke(newClass, new Object[]{});
        } catch (Exception ex) {
            Logger.getLogger(NewClass.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
    public void speak(){
        System.out.println("speak");
    }
    
    public void running(){
        System.out.println("running");
    }
    
}

public class Test {
    public static void main(String[] args) {
        NewClass newClass =  new NewClass();
        newClass.doTest("speak");
        newClass.doTest("running");
    }
}

run:
speak
running
成功构建 (总时间: 0 秒)