Java Utililty Methods Object NVL

List of utility methods to do Object NVL

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Description

The list of methods to do Object NVL are organized into topic(s).

Method

Stringnvl(String x, String y)
nvl 
if (x == null || x.length() == 0)
    return y;
else
    return x;
Tnvl(T mainValue, T... fallbackValues)
Allows a list of values to be provided, the first non-null value in the list is returned as the result. 
T result = mainValue;
int idx = 0;
while (result == null && idx < fallbackValues.length) {
    result = fallbackValues[idx++];
return result;
Tnvl(T o, T replacement)
Returns the passed object, if not null, or replacement otherwise 
return (isNull(o) ? replacement : o);
Tnvl(T o, T valueIfNull)
nvl 
if (isEmpty(o)) {
    return valueIfNull;
return o;
Tnvl(T object, T defaultValue)
plsql has one or two useful functions and this is one of them. 
return object != null ? object : defaultValue;
Tnvl(T s, T def)
nvl 
return s != null ? s : def;
Tnvl(T t, String message)
Tests the passed object for nullness. 
if (t == null)
    throw new IllegalArgumentException(message != null ? message : "Null parameter");
return t;
Tnvl(T t, String message)
nvl 
if (t == null)
    throw new IllegalArgumentException(message);
return (T) t;
Stringnvl(T value, String defValue)
nvl 
return ((value != null) ? String.valueOf(value) : defValue);
Tnvl(T value, T defaultValue)
Returns the default value if the value is null. 
return value != null ? value : defaultValue;