Hi,

I am sorry for bothering you all. I ran into another question and
solving this question by myself may take a long curve.

I just realized that in Java, the following is not allowed:

    public void sayHello()
    {
        System.out.println("Hello World");
       
        void sayGreeting()
        {
            System.out.println("Good morning");
        }
    }

This is inconvenient to me somehow. For example,

public void sayHello()
{
    System.out.println("Hello");
    System.out.println("Good morning");
    System.out.println("How are you?");
    ...//some code for something else
   
    //now again, it is tedious to retype the code
    System.out.println("Hello");
    System.out.println("Good morning");
    System.out.println("How are you?");

}

I hope to do:

public void sayHello()
{
    void sayGreeting()
    {
        System.out.println("Hello");
        System.out.println("Good morning");
        System.out.println("How are you?");
    }

    sayGreeting();  //1st time
    ...// code for doing something else
    sayGreeting();  //2nd time

}

But Java doesn't allow it. I know if I move up the method sayGreeting()
by one level (outside of sayHello() ), things will be fine. But the
problem is: if sayGreeting() is only useful for sayHello() and no other
methods need or care about sayGreeting(), putting the sayGreeting()
method in the class scope is not a good way. It clutters the class.

Thank you very much for your help.