Java inner class

Write a program in Java to demonstrate inner class.

import java.util.*;

class outer {
    int x;
    void show () {
        Inner I1=new Inner();
        I1.get();
        I1.put();
    }
    
    class Inner {
        int y;
        void get() {
            Scanner in = new Scanner(System.in);
            System.out.println("\n enter value for x & y");
            x=in.nextInt();
            y=in.nextInt();
        }
        void put() {
            System.out.println("\n value for x is " +x);
            System.out.println("\n  value for y is "+y);
        }
    }
}

class Inner {
    public static void main(String[] arg) {
        outer ol=new outer();
        ol.show();
    }
}

Output

enter value for x & y :20  40
value for x is 20
value for y is 40