Java Character equals()用法及代碼示例

字符類的 equals(Object obj) 方法將對象與指定的對象進行比較。當且僅當參數不為 null 並且 Character 對象具有與對象所表示的相同的 char 值時，結果才為真。

用法

public boolean equals(Object obj)

參數

上述方法隻需要一個參數：

需要比較的對象。

返回值

如果對象相同，則 equals(Object obj) 方法返回 true。否則，該方法返回 false。

例子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.");
             }
          }  
     }

輸出：

They are equal.

例子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.");
            }
             }  
           }

輸出：

They are not equal.

例子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.");
    }
     }  
   }

輸出：

The numbers are equal.

示例 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.");
     	}
     }  
   }

輸出：

The numbers are not equal.

相關用法

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