apple.java

Java与面向对象程序设计实验教学讲义.复数类的实现,复数类的复杂运算,身份证号码的分析,图形界面设计

public class Apple {
  private String color;
  private boolean ripe;

  public Apple(String aColor, boolean isRipe) {
     color = aColor;
     ripe = isRipe;
  }

  public void setColor(String aColor) {
     color = aColor;
  }

  public void setRipe(boolean isRipe) {
     ripe = isRipe;
  }

  public String getColor() {
     return color;
  }

  public boolean getRipe() {
      return ripe;
  }

  public String toString() {
     if (ripe)
        return("A ripe " + color + " apple");
     else
        return("A not so ripe " + color + " apple");
  }

  public boolean equals(Object obj) {
     if (obj instanceof Apple) {
        Apple a = (Apple) obj;
        return (color.equals(a.getColor()) && (ripe == a.getRipe()));
     }
     return false;
  }
}