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

booleannull2Boolean(Object s)
null Boolean 
boolean v = false;
if (s != null)
    try {
        v = Boolean.parseBoolean(s.toString());
    } catch (Exception localException) {
return v;
Stringnull2default(final String str, final String def)
nulldefault 
return (str == null || str.length() <= 0) ? def : str;
Stringnull2dots(Object s)
nulldots 
if (s == null || s.toString().length() == 0)
    return "...";
return s.toString();
doublenull2Double(Object s)
null Double 
double v = 0.0D;
if (s != null)
    try {
        v = Double.parseDouble(null2String(s));
    } catch (Exception localException) {
return v;
doublenull2Double(Object s, double defValue)
null Double 
if (s != null) {
    try {
        return Double.parseDouble(s.toString());
    } catch (Exception e) {
return defValue;
Objectnull2Empty(Object obj)
null Empty 
if (obj == null) {
    return "";
return obj;
Stringnull2empty(Object s)
nullempty 
if (s == null) {
    return "";
if (s instanceof String) {
    return (String) s;
return s.toString();
Stringnull2empty(String str)
nullempty 
return str == null ? "" : str;
Stringnull2emptyString(String value)
nullempty String 
if (value != null) {
    return value;
return "";
intnull2Int(Object object, int def)
null Int 
if (object != null) {
    try {
        return Integer.parseInt(object.toString());
    } catch (Exception e) {
return def;