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();
        }
    }
}