In this program, we will read a character from the user and check the input character is an uppercase character or not without using any built-in library method.
Program/Source Code:
The source code to check a given character is an uppercase character or not without using the built-in library method is given below. The given program is compiled and executed successfully.
// Java program to check a given character is an uppercase character
// or not without using the built-in library method
import java.util.Scanner;
public class Main {
static boolean isUppercase(char ch) {
if (ch >= 'A' && ch <= 'Z')
return true;
return false;
}
public static void main(String[] args) {
Scanner X = new Scanner(System.in);
char ch = 0;
System.out.printf("Enter character: ");
ch = X.next().charAt(0);
if (isUppercase(ch))
System.out.printf("Given character is an uppercase character\n");
else
System.out.printf("Given character is not an uppercase character\n");
}
}
Output:
RUN 1:
Enter character: x
Given character is not an uppercase character
RUN 2:
Enter character: Y
Given character is an uppercase character
Explanation:
In the above program, we imported the "java.util.Scanner" package to read input from the user. And, created a public class Main. It contains two static methods main() and isUppercase().
The isUppercase() method returns a Boolean value based on input character, it returns true if a given character is an uppercase character otherwise it returns false.
The main() method is an entry point for the program. Here, we read a character from the user and checked input character is an uppercase character or not and printed the appropriate message.
In this program, we will read a character from the user and check the input character is an uppercase character or not without using any built-in library method.
Program/Source Code:
The source code to check a given character is an uppercase character or not without using the built-in library method is given below. The given program is compiled and executed successfully.
Output:
Explanation:
In the above program, we imported the "java.util.Scanner" package to read input from the user. And, created a public class Main. It contains two static methods main() and isUppercase().
The isUppercase() method returns a Boolean value based on input character, it returns true if a given character is an uppercase character otherwise it returns false.
The main() method is an entry point for the program. Here, we read a character from the user and checked input character is an uppercase character or not and printed the appropriate message.