class aa { public void bb() { class cc { public void dd() { System.out.println("hello"); } } } } How to call dd() method in main method?
class Solution { public static void main(String arg[]) { /* i want to call dd() here */ } } 
- 1Through an instance of cc, as you do with any other class.Stultuske– Stultuske2015-11-30 07:50:12 +00:00Commented Nov 30, 2015 at 7:50
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3 Answers
To call an instance method, you need an instance of that method e.g.
class aa { interface ii { public void dd(); } public ii bb() { // you can only call the method of a public interface or class // as cc implements ii, this allows you to call the method. class cc implements ii { public void dd() { System.out.println("hello"); } } return new cc(); } } later
new aa().bb().dd(); 
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class aa { public void bb() { } static class cc { void dd() { System.out.println("hello"); } } public static void main(String[] args) { cc c = new aa.cc(); c.dd(); } } - You inner class should be in class aa not in method of class aa
- And cc class should be static
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you can call it using calling bb() call from main like,
public static void main(String... s){ new aa().bb() } And modify bb()like,
public void bb() { class cc{ public void dd() { System.out.println("hello"); } } new cc().dd(); } 