Metoden equals(Object obj) i karakterklassen sammenligner objektet med det angivne objekt. Resultatet er sandt, hvis og kun hvis argumentet ikke er null, og Character-objektet har den samme char-værdi som repræsenteret af objektet.
Syntaks
public boolean equals(Object obj)
Parameter
Ovenstående metode kræver kun én parameter:
Objektet, der skal sammenlignes.
Returværdi
Metoden equals(Object obj) returnerer sand, hvis objekterne er ens. Ellers returnerer metoden falsk.
Eksempel 1
public class JavaCharcterEqualsExample1 { public static void main(String[] args) { //Create a Character Character charValue = new Character('A'); // Create an Object Object obj = new Character('A'); // Test the equality for two values if (charValue.equals(obj)) { System.err.println('They are equal.'); } else { System.err.println('They are not equal.'); } } }Test det nu
Produktion:
They are equal.
Eksempel 2
public class JavaCharacterEqualsExample2 { public static void main(String[] args) { //Create a Character Character charValue = new Character('B'); // Create an Object Object obj1 = new Character('C'); // Test the equality for two values if (charValue.equals(obj1)) { System.err.println('They are equal.'); } else { System.err.println('They are not equal.'); } } }Test det nu
Produktion:
They are not equal.
Eksempel 3
public class JavaCharacterEqualsExample3 { public static void main(String[] args) { //Create a Character Character charValue = new Character('1'); // Create an Object Object obj = new Character('1'); // Test the equality for two values if (charValue.equals(obj)) { System.err.println('The numbers are equal.'); } else { System.err.println('The numbers are not equal.'); } } }Test det nu
Produktion:
The numbers are equal.
Eksempel 4
public class JavaCharacterEqualsExample4 { public static void main(String[] args) { //Create a Character Character charValue = new Character('2'); // Create an Object Object obj = new Character('3'); // Test the equality for two values if (charValue.equals(obj)) { System.err.println('The numbers are equal.'); } else { System.err.println('The numbers are not equal.'); } } }Test det nu
Produktion:
The numbers are not equal.