Write a java program to input a string and find the total number of uppercase letters in the string?

Answer 1

The code is given at the bottom. This code requires JAVA 1.5+ version to be compiled.

This is very simple program. We ask user to input string and later we just iterate through all the character in the string. We use Character.isUpperCase() static method to check is the character we are checking is upper case if so we increase count variable by one. After iteration is done we print count variable and application quits.

Note: for statement was introduced in 1.5 JAVA version.

Example of usage:

david-mac:~ david$ java Test

Enter string: This is A Test String.

Your string has 4 upper case letters.

-------------------------

import java.io.*;

import java.lang.*;

public class Test

{

public static void main(String[] args)

throws IOException

{

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

System.out.print("Enter string: ");

String userString = in.readLine();

int count = 0;

for (char ch : userString.toCharArray())

{

if (Character.isUpperCase(ch))

{

count++;

}

}

System.out.println("Your string has " + count + " upper case letters.");

}

}