I am trying to copy a file from one directory to another, everything works perfect except when i try to run Copy.exe am getting an exception. What wrong with the code? why the code withing if statement is executed while the condition is false??
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
public class Ah {
public static void main(String[] args){
File from = new File("."+"/original.exe");
File to = new File("/home/denis/Run/Copy.exe");
if(!to.exists()) {
to.getParentFile().mkdirs();
}
if(from.exists()){
FileChannel is = null;
try {
is = new FileInputStream(from).getChannel();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
FileChannel os = null;
try {
os = new FileOutputStream(to).getChannel();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
os.transferFrom(is, 0, is.size());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
os.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
for(File ff: new File(".").listFiles()){
//Why this code is not executed???
//why the condition is false but if clouse get executed??
//is the problem caused by something else???
System.out.print("There is no such file in a current working directory, except for "+ff+"\n");
}
}
}
}
This is the exception am getting when i run "/home/denis/Run/Copy.exe" from terminal
java.io.FileNotFoundException: /home/denis/Run/Copy.exe (Text file busy)
at gnu.java.nio.channels.FileChannelImpl.open(libgcj.so.10)
at gnu.java.nio.channels.FileChannelImpl.<init>(libgcj.so.10)
at gnu.java.nio.channels.FileChannelImpl.create(libgcj.so.10)
at java.io.FileOutputStream.<init>(libgcj.so.10)
at java.io.FileOutputStream.<init>(libgcj.so.10)
at Ah.main(Copy.exe)
Exception in thread "main" java.lang.NullPointerException
at Ah.main(Copy.exe)
I use GCJ to create executable and i am running java 6 on ubuntu v-12
