cw3a.java

a Java program that reads a file containing instructions written in self-defined file (TPL in this c

import java.io.*;

class cw3a
{
	public static void main(String args[]) throws Exception
	{
		//take command line args as parameter
		if(args.length>=1)				
		{
			try{
					//use BufferedReader and FileReader to read in file
					BufferedReader inFile=new BufferedReader(new FileReader(args[0]));
					String line;
					//while read in file and print out each line into console
					while((line=inFile.readLine())!=null)
						System.out.println(line);			
					inFile.close();
				}catch(IOException e){
					System.out.println("an error["+e+"]");
				}
			}
		else //orint out error message when no file and no command line 
			System.err.println("no such file");
			

	}
}