How to get input from user in java using Java scanner class

 Code:

package javaapplication4;

class SigletonClass{

    private static SigletonClass instance=null;

    public String str;

 

private SigletonClass(){

 

}

public static SigletonClass getInstance()

{

if(instance==null)

{

instance=new SigletonClass();

}

return instance;

}

}

public class JavaApplication4 {

 

   

    public static void main(String[] args) {

   

        SigletonClass single1=SigletonClass.getInstance();

        single1.str="Hi I am the Sigleton Class string";

       

        SigletonClass single2=SigletonClass.getInstance();

        single2.str="Hi I am other  string";

       

        SigletonClass single3=SigletonClass.getInstance();

        single3.str="Hi I am some other string";

       

        System.out.println("First refrence:"+single1.str);

        System.out.println("Second refrence:"+single2.str);

        System.out.println("Third refrence:"+single3.str);

       

    }

}