首页 > 试题广场 >

阅读以下程序,写出输出结果。

[问答题]

阅读以下程序,写出输出结果。

class Tree {
  int height;
  Tree() {
    System.out.println("Planting a seedling");
    height = 0;
  }
  Tree(int initialHeight) {
    height = initialHeight;
    System.out.println("Creating new Tree that is " +
      height + " feet tall");
  }
  void info() {
    System.out.println ("Tree is " + height + " feet tall");
  }
  void info(String s) {
    System.out.println (s + ": Tree is " + height + " feet tall");
  }
}
 
public class Overloading {
  public static void main(String[] args) {
    for(int i = 0; i < 5; i++) {
      Tree t = new Tree(i);
      t.info();
      t.info("overloaded method");
    }
    // Overloaded constructor:
    new Tree();
  }
}

Creating new Tree that is 0 feet tall
Tree is 0 feet tall
overloaded method: Tree is 0 feet tall
Creating new Tree that is 1 feet tall
Tree is 1 feet tall
overloaded method: Tree is 1 feet tall
Creating new Tree that is 2 feet tall
Tree is 2 feet tall
overloaded method: Tree is 2 feet tall
Creating new Tree that is 3 feet tall
Tree is 3 feet tall
overloaded method: Tree is 3 feet tall
Creating new Tree that is 4 feet tall
Tree is 4 feet tall
overloaded method: Tree is 4 feet tall
Planting a seedling

发表于 2017-05-17 16:37:03 回复(0)