JAVA利用标准输入法从键盘输入字符，并将输入的字符写到文本文件中

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.FileNotFoundException;public class InputStreamReaderTest {
public static void main(String[] args) {
BufferedReader br=null;
BufferedWriter bw=null;
String str=null;
FileReader fr= null;
FileWriter fw = null;
String path ="d:/fuck.txt";
int c=0;

br=new BufferedReader(new InputStreamReader(System.in));//不知道这是不是缓冲输入流
System.out.print("请输入数据:");
try {//
str=br.readLine();//从键盘上输入一个字符串，以回车结束。
fw = new FileWriter(path);
bw = new BufferedWriter(fw);
bw.write("太阳出来东方亮，山炮啥样我啥样\\n……");
while(str != null){//用了循环可以多输入几次。
if(str.equalsIgnoreCase("exit")){
break;
}
System.out.println("从键盘上输入的数据为：" + str);//输出屏幕
bw.write(str);//写到文本
//bw.newLine();
System.out.print("请输入数据:");
str=br.readLine();
}
bw.flush();
System.out.println("end");

}catch(FileNotFoundException e){

} catch (IOException e) { } finally{
try {
if(br != null)
br.close();
} catch (IOException e) {

}
try {
bw.close();
} catch (IOException e) {

}
try {
fw.close();
} catch (IOException e) {

}
}

try {
fr = new FileReader(path);
while((c = fr.read())!= -1){//从文本读取
System.out.print((char)c);
}
System.out.println();
} catch (FileNotFoundException e){

} catch (Exception e) {

}

}
}

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class TestBufferStream1 {
public static void main(String args[]) {
try {
String outname = "C:\\zhang.txt";
File f = new File(outname);
//f.createNewFile();
FileInputStream fis = new FileInputStream("C:/dat.txt"); // 这里声明了一个FileInputStream准备从里面往外读数据
FileOutputStream out = new FileOutputStream(outname);

byte[] buff = new byte[1024];
int c = 0;
while(true)
{
c= System.in .read(buff);
String st = new String(buff,0,c);
System.out.println(st);
if("stop".equals(st.trim()))
{
System.exit(0);
break;
}
out.write(buff, 0, c);
}

//fis.close();// 然后关闭
} catch (IOException e) {// 这是异常...
e.printStackTrace();
}
}
}