String name = "长尾猴", feature = "尾巴长";

public Monkey() {

System.out.println("我是使用无参构造的猴子");

}

public Monkey(String type, String feature) {

System.out.println("我是使用有参构造的猴子");

this.name = type;

this.feature = feature;

}

}

public class MonkeyTest {

public static void main(String[] args) {

Monkey m = new Monkey();

System.out.println("名称：" + m.name + "\n" + "特征：" + m.feature);

System.out.println("=======================");

Monkey m1 = new Monkey("白头叶猴", "头上有白毛，喜欢吃树叶");

System.out.println("名称：" + m1.name + "\n" + "特征：" + m1.feature);

}

}

这是一种按题目正规的来写的。还有下面一种，没按提示要求来，但是感觉简便一点。

public class Monkey {

    String name="长尾猴",feature="尾巴长";

    public Monkey(){

        System.out.println("我是使用无参构造的猴子" + "\n" + "名称：" + this.name + "\n" + "特征：" + this.feature);

    }

    public Monkey(String name,String feature){

        this();

        this.name=name;

        this.feature=feature;

    }

}

public class Test {

   public static void main(String[] args) {

      Monkey m=new Monkey("白头叶猴", "头上有白毛，喜欢吃树叶");

    System.out.println("我是使用有参构造的猴子" + "\n" + "名称：" + m.name + "\n" + "特征：" + m.feature);

}

}