Write ONE program containing all these string exercises. Exercise 1 Read a strin

Question

Write ONE program containing all these string exercises.

Exercise 1

Read a string from the user into a string named string1.
Test it with the data: Good morning
Print the following heading and the data contained in string1:
Exercise 1
Good morning

Exercise 2

Create a new string named string2 containing the contents from string1.
Append the following text to the end of string 2.
sleepy heads
(Note that there is a space before sleepy.)
Print the following heading and the data contained in string2:
Exercise 2
Good morning sleepy heads

Exercise 3

Create string3 with an initial value of:
bellow cello fellow hello mellow Novello Othello pillow Rollo solo yellow
Find the location of the first h in string3
Print the following heading and the location found in string3:
Exercise 3
20

Exercise 4

Create an empty string named string4.
Copy string3 into string4.
Using the location found in exercise 3,
change the first h into J
Print the following heading and the data contained in string4:
Exercise 4
bellow cello fellow Jello mellow Novello Othello pillow Rollo solo yellow

Exercise 5

Create a copy of string3 named string5.
Use the find_last_of member function to find the position of the last  l
Print the following heading and the position of the last  l
Exercise 5
70

Exercise 6

Create a new string named string6 containing the contents from string3.
Using the position of the last  l found in exercise 5, erase all characters from string6 following the last  l
Print the following heading and the data contained in string6:
Exercise 6
bellow cello fellow hello mellow Novello Othello pillow Rollo solo yell

Explanation / Answer

import java.util.Scanner;

public class TestString {

   public static void main(String ar[]){
      
       String string1;
       /*Scanner scanner=new Scanner(System.in);
       System.out.print("Enter string1 : ");
       string1=scanner.nextLine();*/
       string1="Good morning";
       //Exercise 1
       printString("Exercise 1 "+string1);
      
       //Exercise 2
       String string2=string1.concat(" sleepy heads");
       printString("Exercise 2 "+string2);
      
       //Exercise 3
       String string3="bellow cello fellow hello mellow Novello Othello pillow Rollo solo yellow";
       int firstIndex=string3.indexOf("h");
       printString("Exercise 3 "+firstIndex);
      
       //Exercise 4
       String string4="";
       string4=string3.replaceFirst(""+string3.charAt(firstIndex)+"", "J");
       printString("Exercise 4 "+string4);
      
       //Exercise 5
       String string5=new String(string3);
       int lastIndex=string5.lastIndexOf("l");
       printString("Exercise 5 "+lastIndex);
      
       //Exercise 6
       String string6=new String(string3.substring(0,lastIndex+1));
       printString("Exercise 6 "+string6);

      
      
   }
   public static void printString(String string){
       System.out.println(string);
      
   }

}

output :

Exercise 1
Good morning
Exercise 2
Good morning sleepy heads
Exercise 3
20
Exercise 4
bellow cello fellow Jello mellow Novello Othello pillow Rollo solo yellow
Exercise 5
70
Exercise 6
bellow cello fellow hello mellow Novello Othello pillow Rollo solo yell

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