Updated Java worker program to close input stream and reduce indentation.

java/io/nayuki/qrcodegen/QrCodeGeneratorWorker.java

@@ -38,14 +38,18 @@ public final class QrCodeGeneratorWorker {
 	
 	public static void main(String[] args) {
 		// Set up input stream and start loop
-		Scanner input = new Scanner(System.in, "US-ASCII");
+		try (Scanner input = new Scanner(System.in, "US-ASCII")) {
 			input.useDelimiter("\r\n|\n|\r");
-		while (true) {
+			while (processCase(input));
+		}
+	}
 	
+	
+	private static boolean processCase(Scanner input) {
 		// Read data length or exit
 		int length = input.nextInt();
 		if (length == -1)
-				break;
+			return false;
 		if (length > Short.MAX_VALUE)
 			throw new RuntimeException();
 		
@@ -93,7 +97,7 @@ public final class QrCodeGeneratorWorker {
 			System.out.println(-1);
 		}
 		System.out.flush();
-		}
+		return true;
 	}
 	
 }