multiplier.java

来自「thinking in java 书中源码 第四版」· Java 代码 · 共 21 行

//: annotations/Multiplier.java
// APT-based annotation processing.
package annotations;

@ExtractInterface("IMultiplier")
public class Multiplier {
  public int multiply(int x, int y) {
    int total = 0;
    for(int i = 0; i < x; i++)
      total = add(total, y);
    return total;
  }
  private int add(int x, int y) { return x + y; }
  public static void main(String[] args) {
    Multiplier m = new Multiplier();
    System.out.println("11*16 = " + m.multiply(11, 16));
  }
} /* Output:
11*16 = 176
*///:~