java 读取并且显示 txt 文件

系统：mac os x 10.9

eclipse

在eclipse 中建立一个project， 命名为Cin_txt，

Cin_txt的内容

test

wang

hello

world

 

以下是输入的代码

 

import java.io.File;



import java.io.FileInputStream;



import java.io.IOException;



 



public class Cin_txt {



 



public static void main(String[] args) {



 



File file = new File("/Users/yinjiewang/Documents/test.txt");



FileInputStream fis = null;



 



try {



fis = new FileInputStream(file);



 



System.out.println("Total file size to read (in bytes) : "



+ fis.available());



 



int content;



while ((content = fis.read()) != -1) {



// convert to char and display it



System.out.print((char) content);



}



 



} catch (IOException e) {



e.printStackTrace();



} finally {



try {



if (fis != null)



fis.close();



} catch (IOException ex) {



ex.printStackTrace();



}



}



}



}

 JDK7 版本

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

 

public class ReadFileExample {

 

    public static void main(String[] args) {

 

        File file = new File("C:/robots.txt");

 

        try (FileInputStream fis = new FileInputStream(file)) {

 

            System.out.println("Total file size to read (in bytes) : "+ fis.available());

 

            int content;

            while ((content = fis.read()) != -1) {

                // convert to char and display it

                System.out.print((char) content);

            }

 

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}