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Simple example to demonstrate issue
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| package se.sjv.jorden.datachange; | |
| import com.google.common.base.Preconditions; | |
| public class MyParser { | |
| public static void main(final String[] args) { | |
| final MyParser myParser = new MyParser(); | |
| Preconditions.checkArgument(args.length == 1, "Incorrect number of arguments."); | |
| // do something before parsing | |
| myParser.parse(args[0]); | |
| // do something after parsing | |
| } | |
| private void parse(final String input) { | |
| final String[] tokens = input.split(";"); | |
| Preconditions.checkArgument(tokens.length == 3); | |
| try { | |
| System.out.println("First parameter: " + parseFirstParam(tokens[0])); | |
| System.out.println("Second parameter: " + parseSecondParam(tokens[1])); | |
| System.out.println("Third parameter: " + parseThirdParam(tokens[2])); | |
| } catch (final IllegalArgumentException e) { | |
| System.err.println("Error while parsing parameters: " + e.getMessage()); | |
| } | |
| } | |
| private String parseFirstParam(final String string) { | |
| return string.trim().toLowerCase(); | |
| } | |
| private String parseSecondParam(final String string) /* throws IllegalArgumentException */ { | |
| final int parsedInt = Integer.parseInt(string); // this may throw NumberFormatException, | |
| // which is a subclass of IllegalArgumentException | |
| return String.format("%d st", parsedInt * 100); | |
| } | |
| private String parseThirdParam(final String string) { | |
| return string.trim().toUpperCase(); | |
| } | |
| } |
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