guessagebean.java

JAVA编程百例书中各章节的所有例子的源代码,包括套接字编程

package ch05.section01;

import java.util.*;

public class GuessAgeBean {

  int answer; //正确答案
  boolean success; //是否答题成功
  String hint; //提示信息
  int ageGuesses; //答题的次数

  public GuessAgeBean() {
    reset();
  }

  public void setGuess(String guess) {
    //答题次数累计
    ageGuesses++;
    int g;
    try {
      //将答案转换为整数
      g = Integer.parseInt(guess);
    }
    //如果输入的不是数字，则捕获异常，并赋值g为-1
    catch (NumberFormatException e) {
      g = -1;
    }
    //如果g为正确答案则置success为true
    if (g == answer) {
      success = true;
    }
    else if (g == -1) {
      hint = "一个数字";
    }
    else if (g < answer) {
      hint = "大一点的";
    }
    else if (g > answer) {
      hint = "小一点的";
    }
  }

  public boolean getSuccess() {
    //判断是否答题正确
    return success;
  }

  public String getHint() {
    //获取提示信息
    return "" + hint;
  }

  public int getAgeGuesses() {
    //取得答题次数
    return ageGuesses;
  }

  public void reset() {
    //重新生成正确答案
    answer = Math.abs(new Random().nextInt() % 100) + 1;
    //置是否成功为false
    success = false;
    //赋值给答题次数为0
    ageGuesses = 0;
  }
}