Stack 类型不是通用的；它不能用参数 <Character> 参数化.

2022-01-22 00:00:00 stack collections java generics

我正在尝试编写一个简单的程序来使用堆栈.它给了我错误

I am trying to write a simple program to use stacks.It is giving me the error

Stack 类型不是通用的；它不能用参数参数化

The type Stack is not generic; it cannot be parameterized with arguments

import java.util.*;

    public class Stack {
            public static void main(String[] args)
            {
                Stack<Character> stack = new Stack<> ();
                s.push("Hello");
                System.out.println(s);

            }

        }

推荐答案

你的类 Stack 正在遮蔽 java.util.Stack.您可以重命名您的班级，或使用完全限定的班级名称，如

Your class Stack is shadowing java.util.Stack. You could rename your class, or use the fully qualified class name like

java.util.Stack<Character> stack = new java.util.Stack<> ();

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