class Outer { String s=”Welcome”; public void MethodInner() { Inner in=new Inner(); in.InnerMethod(); } class Inner { public void InnerMethod() { System.out.println(”Hello!”+s); } } } class RegInnerClass { public static void main(String args[]) { Outer ou=new Outer(); ou.MethodInner(); } } Classes that are defined inside another class are called inner class or nested class. Inner classes benefits in access control and naming control. Try ...