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.
