构建器——《Thinking in Java》随笔001

package cn.skyfffire;

/**
 *
 * @author skyffire
 *
 */
class Tree {
    int height;

    Tree() {
        prt("无参数构造");
    }

    Tree(int i) {
        prt("创建Class Tree使用Integer参数" + i);

        height = i;
    }

    Tree(String s) {
        prt(s);
    }

    void info() {
        prt("Tree 值：" + height);
    }

    static void prt(String s) {
        System.out.println(s);
    }
}

public class Test {
    public static void main(String[] args) {
        Tree aTree = new Tree("hhh");
        Tree bTree = new Tree(1);

        aTree.info();
        bTree.info();
    }
}