how to delete a line from a file in java

[Hemanth Kumar]

try
{
final StringBuilder stringBuilder = new StringBuilder();
InputStream inStream = new FileInputStream("D:\\Canvas\\dline.txt");
final InputStreamReader streamReader = new InputStreamReader(inStream, "UTF-8");
final BufferedReader bufferedReader = new BufferedReader(streamReader);
String line = "";
while ((line = bufferedReader.readLine()) != null) {
System.out.println(line);
stringBuilder.append(line); }

}catch(Exception e){
System.out.println(e);
}

BUt still its displaying with junk characters

[Hemanth Kumar]

if i use UTF-16 its working fine

[Norm]

I used "Unicode"

[Hemanth Kumar]

Now from this unicode file i want to delete the second line and save the file with.xml extension. Should i use RandomAccessFile class for this?

[Norm]

You could. See post#2

[Hemanth Kumar]

ok Thank u. I am able to do this...

[Hemanth Kumar]

try
{
PrintWriter out = null ;
out = new PrintWriter (new FileWriter ("D:\\Canvas\\dline.xml"));
String line = null;
int lineNum = 0;
try {
FileInputStream in = new FileInputStream("D:\\Canvas\\dline.xcvs");
BufferedReader br1 = new BufferedReader(new InputStreamReader(in,"UTF-16"));
while( (line =br1.readLine()) != null) {
lineNum +=1;
if(lineNum == 2){
continue;
}
out.println(line);
}
System.out.println("Line deleted and converted to .xml file");
}
catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
out.flush();
out.close();
try {
FileInputStream in = new FileInputStream("D:\\Canvas\\dline.xcvs");
BufferedReader br1 = new BufferedReader(new InputStreamReader(in,"UTF-16"));
br1.close();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

catch(Exception e){
System.out.println(e);
}

This is the working code for the above problem..

[Bushman]

try
{
PrintWriter out = null ;
out = new PrintWriter (new FileWriter ("D:\\Canvas\\dline.xml"));
String line = null;
int lineNum = 0;
try {
FileInputStream in = new FileInputStream("D:\\Canvas\\dline.xcvs");
BufferedReader br1 = new BufferedReader(new InputStreamReader(in,"UTF-16"));
while( (line =br1.readLine()) != null) {
lineNum +=1;
if(lineNum == 2){
continue;
}
out.println(line);
}
System.out.println("Line deleted and converted to .xml file");
}
catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
out.flush();
out.close();
try {
FileInputStream in = new FileInputStream("D:\\Canvas\\dline.xcvs");
BufferedReader br1 = new BufferedReader(new InputStreamReader(in,"UTF-16"));
br1.close();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

catch(Exception e){
System.out.println(e);
}

This is the working code for the above problem..

Lol an army of complexed replies. These are unescessary.
Solution.
Load the contents of the file into an array list.
Manipulate the array list itself.
Overwrite the file whenever you wish.

[Norm]

What if the file is HUGE?