Java Character hashCode() Method

The hashCode() method of Character class generally returns the hash code for the given character. The result of the given method is similar to the result of invoking the charValue() method.

Syntax

Parameter

N.A.

Return Value

The hashCode() method of Character class returns the hash code for the given character.

Example 1

public class JavaCharacterhashCodeExample1 {
public static void main(String[] args) {
	// Create two Character objects char1 and char2.
	     Character char1, char2;
	// Assign the values to char1 and char2.
	     char1 = new Character('A');
	char2 = new Character('a');	
	// Create twoint primitives obj1, obj2
	int obj1, obj2;
// Assign the hashcodes of char1 and char2 to obj1 and obj2.
	obj1 = char1.hashCode();
	obj2 = char2.hashCode();
String str1 = "The hashcode for the first character '" + char1 + "' is given as: " + obj1;
String str2 = "The hashcode for the second character '" + char2 + "' is given as: " + obj2;
	// Print the values of obj1 and obj2.
	System.err.println(str1 );
	System.err.println(str2 );
	 }
}

Output:

The hashcode for the first character 'A' is given as: 65
The hashcode for the second character 'a' is given as: 97

Example 2

public class JavaCharacterhashCodeExample2 {
	public static void main(String args[])
	  {
	    Character char1 = new Character('M');
	    Character char2 = new Character('N');
	    Character char3 = new Character('O');	
	    Character char4 = new Character('a');
	    Character char5 = new Character('b');
	    Character char6 = new Character('c');	
	int obj1 = char1.hashCode();
	int obj2 = char2.hashCode();
	int obj3 = char3.hashCode();
	int obj4 = char4.hashCode();
	int obj5 = char5.hashCode();
	int obj6 = char6.hashCode();
	System.err.println("The hash code for 'M' is given as: " + obj1); 
	System.err.println("The hash code for 'N is given as:  " + obj2);
	System.err.println("The hash code for 'O' is given as: " + obj3);
	System.out.println("The hash code for 'a' is given as: " + obj4);
	System.out.println("The hash code for 'b' is given as: " + obj5);
	System.out.println("The hash code for 'c' is given as: " + obj6);
	}
}

Output:

The hash code for 'M' is given as: 77
The hash code for 'N is given as:  78
The hash code for 'O' is given as: 79
The hash code for 'a' is given as: 97
The hash code for 'b' is given as: 98
The hash code for 'c' is given as: 99

Example 3

public class JavaCharacterhashCodeExample3 {
	public static void main(String args[])
	  {
	    Character char1 = new Character('1');
	    Character char2 = new Character('2');
	    Character char3 = new Character('3');		
	int obj1 = char1.hashCode();
	int obj2 = char2.hashCode();
	int obj3 = char3.hashCode();
	System.err.println("The hash code for '1' is given as: " + obj1); 
	System.err.println("The hash code for '2' is given as:  " + obj2);
	System.err.println("The hash code for '3' is given as: " + obj3);
	    }
}

Output:

The hash code for '1' is given as: 49
The hash code for '2' is given as:  50
The hash code for '3' is given as: 51

Java Character hashCode(char value) Method

The hashCode(char value) method of Character class generally returns a value of type hash code for a given char value. The result of the given method is similar to the result of Character.hashCode() method.

Syntax

Parameter

value: It is the char value for which there is a need to return a hash code.

Return Value

The hashCode(char value)method returns a value of type hash code for the given char value.

Example 4

public class JavaCharacterhashCode_Example1{
	public static void main(String[] args) {
		// Create two char primitives obj1 and obj2.
	char obj1, obj2;
	// Assign the values to obj1 and obj2.
	obj1 = 'D';
	obj2= 'd';
// Create two int primitives b1 and b2.
	int b1, b2;
// Assign the hash code of obj1 and obj2 to b1 and b2
	b1 = Character.hashCode(obj1);
	b2 = Character.hashCode(obj2);	
	System.err.println("The hash code for the first character is given as: " + b1);
	System.err.println("The hash code for the second character is given as:" + b2); 
	   }
	}

Output:

The hash code for the first character is given as: 68
The hash code for the second character is given as:100

Example 5

public class JavaCharacterhashCode_Example2 {
	public static void main(String[] args) {
		// Create three char primitives obj1, obj2 and obj3.
	char obj1, obj2,obj3;
	// Assign the values to obj1, obj2 and obj3.
	obj1 = '1';
	obj2 = '3';
	obj3 = '5';
// Create three int primitives b1, b2 and b3.
	int b1, b2,b3;
// Assign the hash codes.
	b1 = Character.hashCode(obj1);
	b2 = Character.hashCode(obj2);	
	b3 = Character.hashCode(obj3);	
	System.err.println("The hash code for the first character is given as: " + b1);
	System.err.println("The hash code for the second character is given as:" + b2); 
	System.err.println("The hash code for the third character is given as:" + b3); 
	   }
	}

Output:

The hash code for the first character is given as: 49
The hash code for the second character is given as:51
The hash code for the second character is given as:53

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