java控制台输入

java用scanner和bufferedreader两种方式在控制台输入

• scanner
• bufferedreader

---

scanner

package TestProgramPackage01;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;

public class TestProgramPackageClass01 {

    public static void main(String[] args) {
        System.out.print("enter a integer number: ");
        Scanner in =new Scanner(System.in);
        System.out.println(in.nextLine());
        /*in.nextLine()读取接下来输入的一行，返回字符串，还有很多方法
        *如：in.nextint(),in.nextfloat()等等，
        *可以eclipse中alt+/查看具体方法
        */
    }
}

bufferedreader

package TestProgramPackage01;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;

public class TestProgramPackageClass01 {

    public static void main(String[] args) {
        String ch;
        BufferedReader br=new BufferedReader(
                                            new InputStreamReader(System.in));
        try {
            ch=br.readLine();

            /*br.readline()用于读取一行，包括空格，br.read()不包括空格
            *
            */
            System.out.println(ch);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}