readfile.java

来自「一个J2SE的简单入门」· Java 代码 · 共 33 行

package 第九章;

import java.io.FileInputStream;
import java.io.FileOutputStream;

public class ReadFile {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try
		{
			FileOutputStream fileout= new FileOutputStream("e:\\hello.txt",true);
			fileout.write("I love java".getBytes());
			//实例化一个字节数组
			byte[] buf= new byte[1024];
			//实例化一个 FileInputStream对象
			FileInputStream filein= new FileInputStream("e:\\hello.txt");
			int len= filein.read(buf);
			System.out.println(new String(buf,0,len));
			fileout.close();
			filein.close();
		}
		catch(Exception e)
		{
			
		}
	}

}