Scanner类的简单用法（这里举个读取控制台输入的内容，然后输出到控制台的简单例子）

package com.hcj.july21.pm;

import java.util.Scanner;

public class TestScanner {
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		String str = s.nextLine();
		System.out.println(str);
	}
}
package com.hcj.july21.pm;

import java.util.Sc