Java Utililty Methods Long Number Create

List of utility methods to do Long Number Create

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Description

The list of methods to do Long Number Create are organized into topic(s).

Method

longtoLong(Object value)
to Long 
if (value instanceof Number)
    return ((Number) value).longValue();
return Long.parseLong(value.toString());
LongtoLong(Object value)
to Long 
if (value == null) {
    return 0L;
} else {
    Long longNum = new Long(value.toString());
    return longNum;
LongtoLong(Object value)
to Long 
try {
    if (value == null || EMPTY.equals(value)) {
        return null;
    return Long.valueOf(value.toString());
} catch (Exception e) {
    e.printStackTrace();
    return null;
...
longtoLong(Object value)
to Long 
if (value instanceof Number)
    return ((Number) value).longValue();
else if (value == null)
    return 0;
else
    return Long.parseLong(value.toString());
LongtoLong(Object value)
to Long 
return toLong(value, 0L);
longtoLong(Object value, long defaultValue)
Converts a generic object value to a long if possible:
  • If value is null the default is returned
  • If value is a Number then its Number#longValue() is returned
  • Otherwise, the value's #toString() is parsed as a long 
if (value == null) {
    return defaultValue;
} else if (value instanceof Number) {
    return ((Number) value).longValue();
} else { 
    return Long.parseLong(value.toString());
LongtoLong(Object x)
to Long 
if (x == null)
    return null;
if (x instanceof Long)
    return (Long) x;
if (x instanceof Integer)
    return Long.valueOf(((Integer) x).intValue());
if (x instanceof String)
    return Long.valueOf((String) x);
...
long[]toLong(short[] arr)
Converts an array of short values to an array of long values. 
int n = arr.length;
long[] converted = new long[n];
for (int i = 0; i < n; i++) {
    converted[i] = arr[i];
return converted;
longtoLong(String input, int radix, long defaultValue)
to Long 
try {
    return Long.parseLong(input, radix);
} catch (Exception e) {
    return defaultValue;
longtoLong(String numeric)
to Long 
return (isNumeric(numeric)) ? Long.parseLong(numeric) : 0;