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Java 9接口中的私有方法

王林
王林转载
2023-08-20 14:05:081242浏览

Java 9接口中的私有方法

以下是一个示例,展示了如何在Java 9接口中使用私有方法 −

示例

interface my_int{
   public abstract void multiply_vals(int a, int b);
   public default void add_vals(int a, int b){
      sub_vals(a, b);
      System.out.print("Default method result ");
      System.out.println(a + b);
   }
   private void sub_vals(int a, int b){
      System.out.print("Private method result ");
      System.out.println(a - b);
   }
   private static void div(int a, int b){
      System.out.print(" Private static method result ");
      System.out.println(a / b);
   }
}
public class my_new_int implements my_int{
   @Override
   public void multiply_vals(int a, int b){
      System.out.print("Abstract method result ");
      System.out.println(a * b);
   }
   public static void main(String[] args){
      my_int in = new my_new_int();
      in.multiply_vals(11, 34);
      in.add_vals(78, 0);
   }
}

Output

Abstract method result 374
Private method result 78
Default method result 78

An interface named ‘my_int’ is defined, that has an abstract function, without a body. Another 默认函数被定义为基本上将两个数字相加。另一个名为‘sub_vals’的函数是 defined, which subtracts the two numbers.

Another static function named div is defined that divides the two values. A class named ‘my_new_int’ implements the previously defined interface. It overrides the function that multiplies values and redefines it. In the main function, an instance of the interface is created, and the ‘multiply_vals’ function is called by passing specific values. Similarly, the ‘add_vals’ function is also called by passing specific values. The respective output is displayed on the console.

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