字节流和字符流复制文件内容实例

字节流和字符流复制文件内容实例

字节流：

import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException;public class TestByteStream {public static void main(String[] args) throws IOException {FileInputStream in = null;FileOutputStream out = null;try {File f = new File("/home/project/new_file.txt");f.createNewFile();//通过构造方法之一：String构造输入流in = new FileInputStream("/home/project/ori_file.txt");//通过构造方法之一：File类构造输出流out = new FileOutputStream(f);//通过逐个读取、存入字节，实现文件复制int c;while ((c = in.read()) != -1) {out.write(c);}} catch (IOException e) {System.out.println(e.getMessage());} finally {if (in != null) {in.close();}if (out != null) {out.close();}}} }

字符流：

import java.io.*; public class TestCharStream{public static void main(String[] args) throws IOException {FileReader in = null;FileWriter out = null;try{//其中args[0]代表程序执行时输入的第一个参数in = new FileReader(args[0]);out = new FileWriter(args[1]);//通过逐个读取、存入字符，实现文件复制int c;while ((c = in.read()) != -1) {out.write(c);}}catch(IOException e){System.out.println(e.getMessage());}finally{if(in != null){in.close();}if(out != null){out.close();}}} }

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