leaf.java

来自「think in java TIJ-3rd-edition-code.zip」· Java 代码 · 共 23 行

//: c04:Leaf.java
// Simple use of the "this" keyword.
import com.bruceeckel.simpletest.*;

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