Java Utililty Methods String Empty to Null

List of utility methods to do String Empty to Null

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Description

The list of methods to do String Empty to Null are organized into topic(s).

Method

StringemptyStringToNull(String input)
empty String To Null 
if (input.trim().equals("")) {
    return null;
} else {
    return input.trim();
StringemptyStringToNull(String str)
empty String To Null 
return str == null || str.equals("") ? null : str;
StringemptyStringToNull(String string)
Returns null, if the specified string is null or the empty string. 
return isEmptyOrNull(string) ? null : string;
StringemptyToDefault(String value, String def)
empty To Default 
return (value == null || value.length() == 0) ? def : value;
T[]emptyToDefault(T[] values, T[] def)
empty To Default 
return values == null || values.length == 0 ? def : values;
StringemptyToNull(final String text, final boolean doTrim)
Returns null if a string variable is empty. 
if (doTrim && (text != null)) {
    return ("".equals(text.trim())) ? null : text;
} else {
    return ("".equals(text)) ? null : text;
StringemptyToNull(String field)
empty To Null 
return "".equals(field) ? null : field;
StringemptyToNull(String s)
empty To Null 
if (s == null || s.length() == 0)
    return null;
String trimmed = trim(s);
return (trimmed.length() != 0 ? s : null);
StringemptyToNull(String s)
Converts a 0-length string to null, leaves the string as is otherwise. 
if (s == null)
    return null;
return s.length() == 0 ? null : s;
StringemptyToNull(String str)
Returns the given string if it is nonempty; null otherwise. 
return (str == null || str.length() == 0) ? null : str;