/*
 * Microsoft JDBC Driver for SQL Server
 * 
 * Copyright(c) Microsoft Corporation All rights reserved.
 * 
 * This program is made available under the terms of the MIT License. See the LICENSE file in the project root for more information.
 */

package com.microsoft.sqlserver.jdbc;

/**
 * Utility class for Strings.
 * 
 * @since 6.1.2
 */
public class StringUtils {

    public static final String SPACE = " ";

    public static final String EMPTY = "";

    /**
     * Developer should not create {@code StringUtils} instance in standard programming. Instead, the class should be used as
     * {@code StringUtils.isEmpty("String")}
     */
    private StringUtils() {
        // Hiding constructor.
    }

    /**
     * Checks if String is null
     * 
     * @param charSequence
     *            {@link CharSequence} Can provide null
     * @return {@link Boolean} if provided char sequence is null or empty / blank
     * @since 6.1.2
     */
    public static boolean isEmpty(final CharSequence charSequence) {
        return charSequence == null || charSequence.length() == 0;
    }
    
    /**
     * Check if String is numeric or not. 
     * @param str {@link String} 
     * @return {@link Boolean} if provided String is numeric or not.
     */
    public static boolean isNumeric(final String str) {
        return !isEmpty(str) && str.matches("\\d+(\\.\\d+)?");
    }
    
    /**
     * Check if string is integer or not
     * @param str {@link String} 
     * @return {@link Boolean} if provided String is Integer or not.
     */
    public static boolean isInteger(final String str) {
        boolean isInteger = false;
        
        try {
            int i = Integer.parseInt(str);
            isInteger = true;
        }catch(NumberFormatException e) {
            //Nothing. this is not integer. 
        }
        
        return isInteger;
    }

}

@@ -1608,52 +1608,8 @@
 ) %7B%0A
-        boolean isInteger = false;%0A        %0A
     
@@ -1633,16 +1633,8 @@
     
- int i =
  Int
@@ -1669,19 +1669,14 @@
     
-isInteger =
+return
  tru
@@ -1691,13 +1691,23 @@
    %7D
+%0A        
 catch
+ 
 (Num
@@ -1744,16 +1744,17 @@
       //
+ 
 Nothing.
@@ -1774,17 +1774,16 @@
 integer.
- 
 %0A       
@@ -1791,39 +1791,26 @@
 %7D%0A  
- 
-     %0A
       
-  
 return 
-isInteger
+false
 ;%0A  

remove useless assignment