I am using the ORO project in order to extract information from a document, but some times the code seems to block near the if statement. The code is listed below:

			

			public static final void main(String args[]) {
			

				

				String lastThing;
			
			

				

				String kena, keyq, b, b11, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10;
			
			

				

				int groups;
			
			

				

				PatternMatcher matcher;
			
			

				

				PatternCompiler compiler;
			
			

				

				Pattern pattern = null;
			
			

				

				PatternMatcherInput input;
			
			

				

				MatchResult result;
			
			

				

				compiler = new Perl5Compiler();
			
			

				

				matcher = new Perl5Matcher();
			
			

				

				try {
			
			

				

				kena = "\s+";
			
			

				

				b1 = "(.[^\r]+)\s+";
			
			

				

				b11 = ".[^\r]+\s+";
			
			

				

				b3 = "(.[^\|]+)\|";
			
			

				

				b4 = "(\s*\d+\-\d+\-\d+\-\d+)";
			
			

				

				b5 = "(\s*ABOUT THIS BOOK\s*)"; //let it out
			
			

				

				b6 = "(\w[^@]+)More Titles By This Author";
			
			

				

				b = kena + b11 + b1 + kena + b1 + kena + b3 + b3 + b3 + b3 + b3 + b4 + b5 + b6;
			
			

				

				pattern = compiler.compile(b);
			
			

				

				System.out.println("pattern insered ");
			
			

				

				} catch (MalformedPatternException e) {
			
			

				

				System.err.println("Bad pattern.");
			
			

				

				System.err.println(e.getMessage());
			
			

				

				return;
			
			

				

				}
			
			

				

				input = new PatternMatcherInput(readFile() + keyq);
			
			

				

				if (matcher.contains(input, pattern)) {
			
			

				

				result = matcher.getMatch();
			
			

				

				System.out.println("--------------- results here------------");
			
			

				

				groups = result.groups();
			
			

				

				for (int group = 1; group
				< groups; group++) {
			
			

				

				System.out.println(group + ": " + result.group(group));
			
			

				

				}
				

				}
				

				}