Write a program to manipulate strings in java.

Write a program to manipulate strings in java.

Program Algorithm:

Step 1: Create a class with the main function.

Step2: Get a string input from the user using the BufferedrEADER STREAM.

Step 3:call the following functions on the string: .toLowerCase(),.toUpperCase()

Step 4:Place an integer in the wrapper class Integer and parse it to strings using toString()

Step 5:Try calling 4 more methods on the strings.

Program Code:

import java.io.*;

class StrMan

{

public static void main(String args[])throws IOException

{

BufferedReader b=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter a String:");

String s=b.readLine();

System.out.println("Trimmed String:"+s.trim());

System.out.println("Entered string in lowwer case: "+s.toLowerCase());

System.out.println("Entered string in upper case: "+s.toUpperCase());

Integer a=new Integer(8);

System.out.println("a= "+ a);

System.out.print("a.toString():");

System.out.println(a.toString());

System.out.println("Enter the position to extract character:");

int p=Integer.parseInt(b.readLine());

if(p<=s.length())

System.out.println("Charachter at pos "+p+" in String "+s+" is '"+s.charAt(p-1)+"'.");

else

System.out.println("Valid position not entered.");

for(int i=0;i<s.length();i++)

System.out.println("Index of '"+s.charAt(i)+"' is "+s.indexOf(s.charAt(i)));

System.out.println("Enter the index to replace charachter:");

p=Integer.parseInt(b.readLine());

if(p<s.length())

{

System.out.println("Enter the charachter to replace with:");

char c=(char)b.read();

System.out.println("Replaced String:"+s.replace(s.charAt(p),c));

}

else

System.out.println("Enter a valid position.");

}

}

Sample Inputs and Outputs:

Enter a String:

Ankit

Trimmed String:Ankit

Entered string in lowwer case: ankit

Entered string in upper case: ANKIT

a= 8

a.toString():8

Enter the position to extract character:

2

Charachter at pos 2 in String Ankit is 'A'.

Index of is 0

Index of 'A' is 1

Index of 'n' is 2

Index of 'k' is 3

Index of 'i' is 4

Index of 't' is 5

Enter the index to replace charachter:

0

Enter the charachter to replace with:

S

Replaced String:SAnkit