Programming Tutorials

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How to use and access the inner class in java

By: Saravanan in Java Tutorials on 2009年10月03日 [フレーム]

In this Tutorial we are going to see how to use a named inner class, how to access inner class in Java. 

//A named inner class is used.
// This is used to show that it can access non-local variables in the enclosing object.
public class InnerExample
 {
 static String msg= "Welcome";
 public static void main(String[] arg)
 {
 class InnerClass {
 public void doWork()
 {
 System.out.println(msg);
 }
 }
 InnerClass i = new InnerClass();
 i.doWork();
 }
}
// Access inner class from outside 
public class InnerExample2
 {
 public static void main(String[] args)
 {
 OuterClass outer = new OuterClass();
 outer.new InnerClass().welcome();
 }
}
class OuterClass
 {
 public class InnerClass
 {
 public void welcome()
 {
 System.out.println("Welcome from InnerClass()");
 }
 }
}



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