Question

我正在尝试传递一个对象数组，但我一直在犯错误。例如，我正在尝试传递一个Faculty对象数组，但是如何在main上调用它？

//main code

Faculty[] g = new Faculty[2];

g[0]= new Faculty ("Johnson", "Anne", 243, 'F',62,4,27, "FU","Ph.D", "Engineering",3);
g[1]= new Faculty ("Wu", "John", 243, 'F',62,4,27, "FU", "Ph.D", "Engineering", 3);


//I tried the following two lines and it gave me an error

BinarySearch<Object>  eOb =  new BinarySearch<>(g);

BinarySearch<Faculty> eOb =  new BinarySearch<>(g);

这就是我用泛型

声明我的二进制搜索类的方法

public class BinarySearch <T extends Comparable<T>> {

    private T[] array;

    public BinarySearch( T[] a){
        super();
        array = a;
    }

    public int binarySearch(T number){
        // Code

    }
}

这是错误：

绑定不匹配：Object类型不是有效替代有界参数＆gt;这种类型 BinarySearch - T无法解析为类型

Answer 1

只要Faculty被声明为：

public class Faculty implements Comparable<Faculty> {

}

......第二种形式应该足够了：

BinarySearch<Faculty> eOb =  new BinarySearch<>(g);

Object不是Comparable，所以它不能落在一个范围内。

通过泛型传递数组对象

1 个答案: