leaf.java

来自「Thinking in JAVA第四版源代码」· Java 代码 · 共 20 行

//: initialization/Leaf.java
// Simple use of the "this" keyword.

public class Leaf {
  int i = 0;
  Leaf increment() {
    i++;
    return this;
  }
  void print() {
    System.out.println("i = " + i);
  }
  public static void main(String[] args) {
    Leaf x = new Leaf();
    x.increment().increment().increment().print();
  }
} /* Output:
i = 3
*///:~