整行读取键盘录入的内容，并打印出来

public class ReadKeyDemo {
public static void main(String[] args) throws IOException {
/**
*  需求：整行读取键盘录入的内容，并打印出来
* 1.创建一个字节输入流对象，并传入System.in
* 2.将字节输入流转换为字符输入流
* 3.创建一个BufferedInputWriter对象，并传入第2步的字符输入流
*/
/*复杂书写
InputStream in = System.in;
InputStreamReader isr = new InputStreamReader(in);
BufferedReader br = new BufferedReader(isr);*/

//简化书写
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

String line = null;
while ((line = br.readLine()) != null){
System.out.println(line);
}
}
}

public class KeyDataToFile {
public static void main(String[] args) throws IOException {
/**
*  需求：将键盘输入内容写入到指定文件
*/
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new FileWriter("F:\\wola.txt"));

String str = null;
while ((str=br.readLine()) != null){
if("over".equals(str)){  //最好指定一个终结符
break;
}
bw.write(str);
bw.newLine();
bw.flush();
}
}
}