This is an exercise in using the String and StringBuilder classes @author (your

Question

This is an exercise in using the String and StringBuilder classes @author (your name) @version (a version number or a date)/public class StringTesting {public static void main (String[] args) {//declare a reference to a String object://declare a reference to a StringBuilder object//declare a reference to a Scanner object//declare an int to hold the unicode value of a character//create a Scanner object that will use the keyboard for input//create a String object with input from the user//create a StringBuilder object from the String//loop through the StringBuilder object character by character.//change each character to the next character in the unicode//encoding scheme//print the original String and the StringBuilder contents//compile and run//set a breakpoint near the top of the code, //not on a declaration statement//step though the statement and exampline the variables}//end of main}//end of class

Explanation / Answer

package elastic5.elastic5;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class ttt {
   public static void main(String[] args) {

       // declare a reference of String object;

       String s = null;

       // declare a reference of StringBuilder object;

       StringBuilder sb;

       // declare a reference of Scanner object;

       Scanner sc;
       // declare a int hold value of character

       int cc = 0x2202;

       // scanner taking value from keyword

       Scanner keyboard = new Scanner(System.in);
       System.out.println("enter a Stringr");
       s = keyboard.next();

       // string object creation

       String keywordString = new String(s);

       // String to stringbuilder
       StringBuilder sbuilder = new StringBuilder(keywordString);
       System.out.println("sbuilder" + sbuilder);

       // loop through stringbuilder to character
       // change character to next character and change in unicode

       StringBuilder ssnew = new StringBuilder();
       for (int i = 0, n = sbuilder.length(); i < n; i++) {
           char c = sbuilder.charAt(i);
           System.out.println("c" + c);

           ssnew.append(String.format("\u%04x", (int) sbuilder.charAt(i++)));

       }
       System.out.println("string==" + s);
       System.out.println("Unicode Stringbuilder " + ssnew);
   }

}

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