Java Character isAlphabetic() Method

The isAlphabetic(intcodePoint)method of Character class determines whether the specified character is an alphabet or not.

A character is considered to be an alphabet if it has the following characteristics:

UPPERCASE_ LETTER
LOWERCASE_LETTER
TITLECASE_LETTER
MODIFIER_LETTER
OTHER_LETTER
LETTER_NUMBER or
Other alphabets defined by the Unicode Standard.

Syntax

Parameter

codePoint: It is the character to be tested.

Return Value

The isAlphabetic(intcodePoint)method returns true if the character is a Unicode alphabet character. Otherwise, this method returns the false.

Example 1

public class JavaCharacterisAlphabeticExample1 {	
	public static void main(String[] args) {
	char codepoint1 = '0';
	char codepoint2 = '1';
	boolean b1 = Character.isAlphabetic(codepoint1);
	boolean b2 = Character.isAlphabetic(codepoint2);  
	System.out.println("The returned value for the first character is given as:"+"   "+b1);
	System.out.println("The returned value for the first character is given as:"+"   "+b2);
	
	    }
	}

Test it Now

Output:

The returned value for the first character is given as:   false
The returned value for the first character is given as:   false

Example 2

public class JavaCharacterisAlphabeticExample2 {
public static void main(String[] args) {	
	// Initialize the codepoints
	int codepoint1 = 87;
int codepoint2 = 49;
	int codepoint3 = 63;
	// Check if the first codepoint is alphabet or not.
boolean checkAlp1 = Character.isAlphabetic(codepoint1);
	if(checkAlp1){
	System.err.print("Codepoint \'"+codepoint1+"\' is an alphabet.\n");
		}
	else{
	System.out.print("Codepoint \'"+codepoint1+"\' is not an alphabet.\n");
		}
	// Check if the second codepoint is alphabet or not.
	boolean checkAlp2 = Character.isAlphabetic(codepoint2);
	if(checkAlp2){
	System.err.print("Codepoint \'"+codepoint2+"\' is an alphabet.\n");
		}
	else{
	System.out.print("Codepoint \'"+codepoint2+"\' is not an alphabet.\n");
		}
	// Check if the third codepoint is alphabet or not.
	boolean checkAlp3  = Character.isAlphabetic(codepoint3);
	if(checkAlp3){
System.err.print("Codepoint \'"+codepoint3+"\' is an alphabet.\n");
		}
	else{
	System.out.print("Codepoint \'"+codepoint3+"\' is not an alphabet.\n");
		}		
	}
}

Test it Now

Output:

Codepoint '87' is an alphabet.
Codepoint '49' is not an alphabet.
Codepoint '63' is not an alphabet.

Example 3

public class JavaCharacterisAlphabeticExample3 {	
	public static void main(String[] args) {
	char codepoint1 = '1';
	char codepoint2 = 'A';
	char codepoint3  ='B';
	boolean b1 = Character.isAlphabetic(codepoint1);
	boolean b2 = Character.isAlphabetic(codepoint2);
	boolean b3 = Character.isAlphabetic(codepoint3);
	System.out.println("The returned value for the first character is given as:"+"   "+b1);
	System.out.println("The returned value for the second character is given as:"+"  "+b2);
	System.out.println("The returned value for the third character is given as:"+"   "+b3);	
	    }
}

Test it Now

Output:

The returned value for the first character is given as:   false
The returned value for the second character is given as:  true
The returned value for the third character is given as:   true

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Java Character Class

Java Character isAlphabetic() Method

Syntax

Parameter

Return Value

Example 1

Example 2

Example 3

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