JAVA----method of inner class (external invoke method of inner class) __java

1. Use static to declare an inner class that can be invoked directly outside the

[Java]  View plain  copy class outer{        //  define outer class         private static String info =  "Hello world"  ;     //  define private properties for external classes        static class inner{  //  use static to define inner class as outer class            public void  print () {                   Methods for defining internal classes                 SYSTEM.OUT.PRINTLN (Info)  ;      //  Direct access to the private properties of external classes             }       };        public void fun () {                       //  methods for defining external classes             new inner (). Print ()  ;                //  invoking methods via internal class-instantiated objects        }  };   public  class InnerClassDemo03{       public static void main ( String args[]) {           new outer.inner (). Print ()  ;                 / /  calls the fun () method of the outer class        }  };  
2. Do not use STATC to declare an inner class, so that the external call

[Java]  View plain  copy class outer{        //  define outer class         private String info =  "Hello world"  ;    //  define private properties for external classes        class Inner{    //  Define inner class            public void print () {                 //  ways to define inner classes                 SYSTEM.OUT.PRINTLN (info)  ;       //  direct access to private properties of external classes             }       };       public void fun () {                        //  defines the method of the outer class            new inner (). Print ( )  ;               //  Object Invocation Method        }  };   public class  by internal class instantiation innerclassdemo04{       public static void main (String args[) ) {           outer out = new outer ()  ;           //  External Class instantiation object             outer.inner in = out.new inner ()  ;   //  instantiation of internal class objects            in.print ()  ;                          //&nbsp Method of calling Inner class        }  };  

3. Define the inner class in the method so that the outer call

[Java] view plain Copy class outer{//define an external class