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

StringemptyToNull(String str)
empty To Null 
return isBlank(str) ? null : str;
StringemptyToNull(String str)
empty To Null 
return isEmpty(str) ? null : str;
StringemptyToNull(String string)
empty To Null 
return isNullOrEmpty(string) ? null : string;
StringemptyToNull(String text)
empty To Null 
if (text != null) {
    if (text.trim().isEmpty()) {
        text = null;
return text;
StringemptyToNull(String val)
empty To Null 
return emptyToDefault(val, null);
StringemptyToNull(String value)
empty To Null 
if (value.length() == 0) {
    return null;
return value;
StringemptyToString(String str, String returnStr)
empty To String 
return isNotEmpty(str) ? str : returnStr;
booleanisHtmlNull(String str)
is Html Null 
if (isEmpty(str) || "null".equals(str.toLowerCase().trim())) {
    return true;
return false;
StringnullSafeToString(Object obj)
Convert the supplied Object to a String using the following algorithm. 
if (obj == null) {
    return "null";
} else if (obj.getClass().isArray()) {
    if (obj.getClass().getComponentType().isPrimitive()) {
        if (obj instanceof boolean[]) {
            return Arrays.toString((boolean[]) obj);
        if (obj instanceof char[]) {
...
StringnvlStr(Object o, String valueIfNull)
nvl Str 
if (isEmpty(o)) {
    return valueIfNull;
return o.toString();