Character function in Java

Hello friends how are you, today in this blog i will teach you what is Character function, types of Character function, how Character functions work and many programs using Character functions in a very simple way. 

Let's start 

Here we are going to learn all Character functions one by one

      1 toUpperCase()

• Converts the given char into uppercase form.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.toUpperCase('a'));
   System.out.println(Character.toUpperCase('A'));
 }
}
/*
### OUTPUT ###
A
A
*/

• 2 toLowerCase()
• Converts the given char into lowercase form.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.toLowerCase('a'));
   System.out.println(Character.toLowerCase('A'));
 }
}
/*
### OUTPUT ###
a
a
*/

• 3 isLetter()
• Used to check the given char is letter or not.
• It returns boolean value(True/False).
• Returns true if char is letter otherwise returns false.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.isLetter('a')); 
   System.out.println(Character.isLetter('9'));
 }
}
/*
### OUTPUT ###
true
false
*/

• 4 isDigit()
• Used to check the given char is digit or not.
• It returns boolean value(True/False).
• Returns true if char is digit otherwise returns false.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.isDigit('a')); 
   System.out.println(Character.isDigit('9'));
 }
}
/*
### OUTPUT ###
false
true
*/

• 5 isUpperCase()
• Used to check the given char is uppercase or not.
• It returns boolean value(True/False).
• Returns true if char is uppercase otherwise returns false.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.isUpperCase('a')); 
   System.out.println(Character.isUpperCase('A'));
 }
}
/*
### OUTPUT ###
false
true
*/

• 6 isLowerCase()
• Used to check the given char is lowercase or not.
• It returns boolean value(True/False).
• Returns true if char is lowercase otherwise returns false.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.isLowerCase('a')); 
   System.out.println(Character.isLowerCase('A'));
 }
}
/*
### OUTPUT ###
true
false
*/

• 7 isWhiteSpace()
• Used to check the given char is white space or not.
• It returns boolean value(True/False).
• Returns true if char is white space otherwise returns false.

class Easy
{  
 public static void main(String[] args) 
 {
   System.out.println(Character.isWhitespace(' ')); 
   System.out.println(Character.isWhitespace('A'));
 }
}
/*
### OUTPUT ###
true
false
*/

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