[jira] [Created] (LANG-1306) Add nullToEmpty method in StringUtils

["Arshad Basha (JIRA)" <ji...@apache.org>]

Arshad Basha created LANG-1306:
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             Summary: Add nullToEmpty method in StringUtils
                 Key: LANG-1306
                 URL: https://issues.apache.org/jira/browse/LANG-1306
             Project: Commons Lang
          Issue Type: New Feature
          Components: lang.*
            Reporter: Arshad Basha
            Priority: Minor
             Fix For: 3.6


The nullToEmpty method will convert null reference to empty string, for non null str it will return the str as it is (i.e. without striping or removing space)

This method doesn't strips white-space nor removes control characters from the start and end of the input string like StringUtils.stripToEmpty and StringUtils.trimToEmpty methods.

This method will allow us to replace common code patterns like the following from client side code:

1) if(str == null) {   str = "";  }

2) return str == null ? "" : str;

Examples:
        assertEquals("", StringUtils.nullToEmpty(null));
        assertEquals("", StringUtils.nullToEmpty(""));
        assertEquals("abc", StringUtils.nullToEmpty("abc"));
        assertEquals("  abc", StringUtils.nullToEmpty("  abc"));
        assertEquals("abc  ", StringUtils.nullToEmpty("abc  "));
        assertEquals("abc\t", StringUtils.nullToEmpty("abc\t"));




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