Convert a String to an int, returning zero if the conversion fails. : String Parser « Data Type « Java






  1. Java
  2. Data Type
  3. String Parser

Convert a String to an int, returning zero if the conversion fails.

    
   
/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


/**
 * 
 *
 * @author John Keyes (john at integralsource.com)
 * @version $Revision: 680644 $, $Date: 2008-07-29 01:13:48 -0700 (Tue, 29 Jul 2008) $
 */
public class Main {


  //--------------------------------------------------------------------
  
  /**
   * <p>Convert a <code>String</code> to an <code>int</code>, returning
   * <code>zero</code> if the conversion fails.</p>
   * 
   * @param str  the string to convert
   * @return the int represented by the string, or <code>zero</code> if
   *  conversion fails
   */
  public static int stringToInt(String str) {
      return stringToInt(str, 0);
  }

  /**
   * <p>Convert a <code>String</code> to an <code>int</code>, returning a
   * default value if the conversion fails.</p>
   * 
   * @param str  the string to convert
   * @param defaultValue  the default value
   * @return the int represented by the string, or the default if conversion fails
   */
  public static int stringToInt(String str, int defaultValue) {
      try {
          return Integer.parseInt(str);
      } catch (NumberFormatException nfe) {
          return defaultValue;
      }
  }

}








Related examples in the same category

1.Parse Comma Delimited List
2.Parse Fraction
3.Parse String to array of Strings while treating quoted values as single element
4.Parse a method signature or method call signature
5.Parse basic types
6.Decodes a String with Numeric Character References
7.Returns true if the argument contains a number
8.Normalize a SQL identifer, up-casing if , and handling of (SQL 2003, section 5.2).
9.Parsing primitives from String's without creating any objects
10.Checks whether the String a valid Java number.
11.Check whether the given String has actual text.