prediction.java

来自「java编程思想(第四版)书中原代码 ,对初学者很有用的东西」· Java 代码 · 共 15 行

//: containers/Prediction.java
// Predicting the weather with groundhogs.
import java.util.*;

public class Prediction {
  private static Random rand = new Random(47);
  private boolean shadow = rand.nextDouble() > 0.5;
  public String toString() {
    if(shadow)
      return "Six more weeks of Winter!";
    else
      return "Early Spring!";
  }
} ///:~