BufferedReader ex = new BufferedReader(new FileReader(new File("d:\\a.txt"))); BufferedWriter ex = new BufferedWriter(new FileReader(new File("d:\\a.txt")));是给文件写进数据的~
g一下不就知道了BufferedReader br = new BufferReader(new FileReader(mew File("d"\\a.txt")));
天哪。这样问的话,你的分肯定不够用。
你百度一下,多的是例子啊。
BufferedReader reader = new BufferedReader(
new InputStreamReader(System.in());
随手写的,你百度吧。
BufferedReader reader = new BufferedReader(
new FileReader(new File("D:\\a.txt")));
BufferedInputStream bu=new BufferedInputStream(f);
byte a[]=new byte[10];
int n;
while((n=bu.read(a))!=-1)
{
...
}
f.close();
bu.close();
InputStreamReader isr = new InputStreamReader(fis);
BufferedReader br = new BufferedReader(isr); while(br.read()!=-1) {
String str = br.readLine();
System.out.println(str);
}
br.close();
isr.close();
fis.close();
异常你自己加一下吧 把上面的代码放到public static void main(String [] args){}里执行就行了
File file = new File("D:\a.txt");
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(file));
String tempString = null;
int lineNo = 1;
while ((tempString = reader.readLine()) != null) {
System.out.println(lineNo + ":" + tempString);
lineNo = lineNo + 1;
}
} catch (IOException e) {
// 例外处理
} finally {
try {
if (null != reader){
reader.close();
}
} catch (IOException e1) {
// 例外处理
}
}
public class TestRead{
public static void main(String[] args){
String s = "d:\a.txt";
File f = new File("S");
BufferedReader br = null;
try{
br = new BufferedReader(f);
String str = null;
while((str=readLine())!=-1){
System.out.println(str);
}
}catch(IOException e){
e.printStackTrace();
}finally{
if(br!=null){
br.close();
}
}
}
}
InputStreamReader isr = new InputStreamReader(fis);
BufferedReader br = new BufferedReader(isr); while(br.read()!=-1) {
String str = br.readLine();
System.out.println(str);
}
BufferedWriter ex = new BufferedWriter(new FileReader(new File("d:\\a.txt")));是给文件写进数据的~