Java Program to Replace any character or string within the entered String

import java.io.*;
import java.util.*;
public class Replacer{
    Scanner scan=new Scanner(System.in);
    String string, replacing, replaceWith;
    public void input(){
        try{
            System.out.println("Enter any String: ");
            string=scan.nextLine();
            System.out.println("Enter any String or Character you want to replace: ");
            replacing=scan.nextLine();
            System.out.println("Enter to which you want to Replace with: ");
            replaceWith=scan.nextLine();
        }
        catch(Exception e){
            System.out.println("Error Code: "+e);
            System.exit(0);
        }
    }

    public void compute(){
        System.out.println("After Replacing \""+replacing+"\" with \""+replaceWith+"\"\nString: "+(string.replace(replacing, replaceWith)));
    }

    public static void main(String[] args){
        Replacer obj=new Replacer();
        obj.input();
        obj.compute();
    }
}