交换机正在以红色取消，我不知道原因

Question

I am new to java trying to learn it, so far so good until now getting an error which i can't seem to find the reason. I am using netbeans IDE The error is that the switch statement is being underlined in red and on the case level it is telling orphaned case.

I tried to import java.lang.String

package chatprogram;

import java.util.*;

public class ChatProgram {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        String s = keyboard.nextLine();

        Switch(s){
            case "Hi":
                System.out.println("Hi");
                break;
        }
    }

}

Answer 1

第一个问题是“切换”而不是“切换”第二我使用的是Netbeans 7.0，其中jdk 1.6不支持switch（String）所以我应该使用更新的jdk所以我从netbeans切换到eclipse