alias1.java

来自「think in java TIJ-3rd-edition-code.zip」· Java 代码 · 共 27 行

//: appendixa:Alias1.java
// Aliasing two references to one object.
import com.bruceeckel.simpletest.*;

public class Alias1 {
  int i;
  Alias1(int ii) { i = ii; }
  public static void main(String[] args) {
    SimpleTest monitor =
      new SimpleTest("Alias1");
    Alias1 x = new Alias1(7);
    Alias1 y = x; // Assign the reference
    System.out.println("x: " + x.i);
    System.out.println("y: " + y.i);
    System.out.println("Incrementing x");
    x.i++;
    System.out.println("x: " + x.i);
    System.out.println("y: " + y.i);
    monitor.expect(new String[] {
      "x: 7",
      "y: 7",
      "Incrementing x",
      "x: 8",
      "y: 8"
    });
  }
} ///:~