Java Utililty Methods Null Value Convert

List of utility methods to do Null Value Convert

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Description

The list of methods to do Null Value Convert are organized into topic(s).

Method

BooleanconvertNullToFalse(Boolean b)
convert Null To False 
if (b == null) {
    return Boolean.FALSE;
return b;
intconvertNullToInteger(Object orgStr, int convertStr)
: convertNullToInt 
if (orgStr == null) {
    return convertStr;
} else {
    return Integer.valueOf(orgStr.toString());
LongconvertNullToLong(Object orgStr, Long convertStr)
: convertNulg 
if (orgStr == null || Long.parseLong(orgStr.toString()) == 0) {
    return convertStr;
} else {
    return Long.valueOf(orgStr.toString());
IntegerconvertNullToOne(final Object value)
Converts value, if null returns one 
if (value == null) {
    return 1;
if (value instanceof Integer) {
    return (Integer) value;
return Integer.valueOf(value.toString());
ObjectconvertNullToSolrValue(String fieldName)
convert Null To Solr Value 
Object convertedFieldValue = null;
if (isSingleValueStringOrText(fieldName)) {
    convertedFieldValue = null;
} else if (fieldName.endsWith("_dt") || fieldName.endsWith("_da")) {
    convertedFieldValue = null;
} else if (fieldName.endsWith("_d")) {
    convertedFieldValue = null;
} else if (isMultiValueStringOrText(fieldName)) {
...
StringconvertNullToString(final String str)
convert Null To String 
if (str == null) {
    return "";
} else {
    final int len = str.length();
    for (int i = 0; i < len; i++) {
        if (str.charAt(i) != ' ')
            break;
    return str.trim();
ObjectconvertNullValue(final Class convertType)
convert Null Value 
if ("byte".equals(convertType.getName())) {
    return (byte) 0;
} else if ("short".equals(convertType.getName())) {
    return (short) 0;
} else if ("int".equals(convertType.getName())) {
    return 0;
} else if ("long".equals(convertType.getName())) {
    return 0L;
...
Stringnull2blank(String prnStr)
nullblank 
if (prnStr == null)
    return "";
else
    return prnStr;
Stringnull2blank(String source)
nullblank 
return source == null ? "" : source;
booleannull2Boolean(Object expression, boolean defValue)
null Boolean 
try {
    return Boolean.parseBoolean(null2String(expression));
} catch (Exception e) {
    return defValue;