problem.txt

Less than 80 chars

 ___________
< text here >
 -----------

two lines

 ________________________________
/ text goes here text goes here  \
\ text goes here text goes here  /
 --------------------------------

More than two lines

 ________________________________
/ text goes here text goes here  \
|                                |
\ text goes here text goes here  /
 --------------------------------

t.java

// compile with: javac t.java 
// run with: java CowSay hello world

class CowSay
{

	final static int WRAP = 80;

	public static String getLine(char c, int l) 
	{
		String line = " ";
		for (int i=0; i<l+2; i++) {
			line += c; 
		}
		return line;
	}

	public static void main(String [ ] args)
	{
		String msg = "";
		for (int i=0; i<args.length; i++) {
			msg += args[i] + " ";
		}
		msg = msg.trim();
		int len = msg.length();
		if (len < WRAP) {
			System.out.println(CowSay.getLine('_',len));
			String out = "< "+msg+" >";
			System.out.println(out);
			System.out.println(CowSay.getLine('-',len));
		} else {
			System.out.println(CowSay.getLine('_',WRAP));
			for(int pos=0; pos<len; pos += WRAP) {
				String line = "";
				int next = (pos+WRAP);
				if (next > len) next = len;
				if (pos==0) {
					line = "/ "+msg.substring(pos,next)+" \\";	
				} else if (len-pos<WRAP) {
					line = "\\ "+msg.substring(pos,next);
					for (int i=WRAP-(len-pos);i>0;i--) {
						line += " ";
					}
					line += " /";
				} else {
					line = "| "+msg.substring(pos,next)+" |";
				}
				System.out.println(line);
			}
			System.out.println(CowSay.getLine('-',WRAP));
		}
		System.out.println("        \\   ^__^");
		System.out.println("         \\  (oo)\\_______");
		System.out.println("            (__)\\       )\\/\\");
		System.out.println("                ||----w |");
		System.out.println("                ||     ||");

	}
}