1 /**
2  * Copyright (C) 2011 the original author or authors.
3  * See the notice.md file distributed with this work for additional
4  * information regarding copyright ownership.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  *     http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 
19 package com.beust.jcommander.validators;
20 
21 import com.beust.jcommander.IParameterValidator;
22 import com.beust.jcommander.ParameterException;
23 
24 /**
25  * A validator that makes sure the value of the parameter is a positive integer.
26  *
27  * @author Cedric Beust <cedric@beust.com>
28  */
29 public class PositiveInteger implements IParameterValidator {
30 
validate(String name, String value)31   public void validate(String name, String value)
32       throws ParameterException {
33     int n = Integer.parseInt(value);
34     if (n < 0) {
35       throw new ParameterException("Parameter " + name
36           + " should be positive (found " + value +")");
37     }
38   }
39 
40 }
41