java文件输出示例

package testFile;


import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;


public class FileWrite {
public static void main(String[] args) throws Exception {
//定义一个文件
File f=new File("D:\\ok.txt");
//定义给一个读取流
InputStreamReader input=new InputStreamReader(System.in);
//把输入流进行封装到BufferedReader里面
BufferedReader br=new BufferedReader(input);
//定义一个文件写入流
FileWriter fw=new FileWriter(f);
//定义一个文件写入流的封装流
PrintWriter out=new PrintWriter(fw);
//读取输入值
String s=br.readLine();
while(s!=null) {
out.print(s);
s=br.readLine();
}
br.close();

}

}