java文件读取代码片断

1.

 public static void main(String[] args) throws IOException {

        int size;

        InputStream fileobject = new FileInputStream(args[0] );

        System.out.println(“可读取的字节数: "

            + (size = fileobject.available()));

        char[] text = new char[200] ;

        for (int count = 0; count < size; count++) {

            text[count] = ((char) fileobject.read());

            System.out.print(text[count]);

        }

        System.out.println("");

        fileobject.close();

    }

 

 

2.解决java.io 读取重复数据的问题：

 

public static void main(String[] args) {

FileInputStream in;

try {

File f = new  File("D:/Txt/a.txt");

in = new FileInputStream(f);

BufferedInputStream buf = new BufferedInputStream(in);

FileOutputStream fileOut = new FileOutputStream(new File("D:/Txt/b.txt"));

BufferedOutputStream bufout = new BufferedOutputStream(fileOut);

int len = 0;

do{

bufout.write(len = buf.read());

}while(len >0);

……关闭流

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

 

}