What is wrong with my code?

[loosemember]

import java.io.*;

public class ReadBds {
	public static void main( String [] args ) {
		char [][] bd = new char [8][8];
		if (args.length==0)
			args = "board01.txt board02.txt board03.txt".split(" ");
		for (String fn : args)
		{
			try{
				BufferedReader bf = new BufferedReader(
						new FileReader(fn));
				// Read board from file
				for (int i=0;i<8;i++)
				{
					String s = bf.readLine();
					for (int j=0;j<8;j++)
						bd[i][j] = s.charAt(j);
				}
                                           
				
				for (int i=0;i<8;i++)
					for (int j=0;j<8;j++)
						if (bd[i][j]=='X_X_X_X_' || bd[i][j]=='_X_X_X_X')
				System.out.printf("Is an empty line %s: %d\n",
						fn,i);
			}
			catch (IOException e) {
				System.out.printf("Problem with file: %s",fn);
			} 
		}
	}
}

I get this error

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
	Invalid character constant

	at ReadBds.main(ReadBds.java:24)

on the line

if (bd[i][j]=='X_X_X_X_' || bd[i][j]=='_X_X_X_X')

cheers

[Fubarable]

In Java Strings require double quotes " not single quotes '.

Also you're not going to want to use == to compare Strings but rather the equals method. Do you know why this is so?