一个简单的System.in

添加Scanner的输入

新建一个工具类

/**
*
*
*/
//package   ******.tools.Scanner;
import java.util.Scanner;
public class MyScanner {
    private static MyScanner myScanner;
    private Scanner sc;
    private MyScanner(){
        sc = new Scanner(System.in);
    }
    public static MyScanner getInstance(){
        if(null == myScanner)
            myScanner = new MyScanner();
        return myScanner;
    }
    public Scanner getSc() {
        return sc;
    }
}

其他类引用需要输入时，

import ************tools.MyScanner;

         =   MyScanner.getInstance().getSc().next****();

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