Reading file with Scanner

You can easily use Scanner Class to read a physical file, you can refer given example:
public class ReadFile
{
private Scanner fileScanner = null;
public ReadFile()
{
this(null);
}
public ReadFile(File fileName)
{
if(fineName==null)
{
throw new NullPointerException("File can not be null.");
}
fileScanner = new Scanner(fileName);
//use line separator delimiter for fetch one by one line from the file, if you don't it fetch one by one word.
fileScanner.useDelimiter(Constant.LINE_SEP);
}
public void read()
{
while(fileScanner.hasNext())
{
System.out.println(fileScanner.next());
}
fileScanner.close();
}
public static void main(string [] arg)
{
try
{
File file = new File(arg[0])
ReadFile fileReader = new ReadFile(file);
fileReader.read();
}
catch(FileNotFoundException ex)
{
ex.printStack();
}
}
}

use this this command:
java ReadFile data.txt