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Character function in Java ?
Character function in Java ?
- 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
*/