Java Utililty Methods Long Number From

List of utility methods to do Long Number From

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Description

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

Method

longlongFromLex(byte[] bytes)
Converts lexicographical sortable long to a regular java long 
long v = bytesLong(bytes, 0);
v ^= c64;
return v;
longlongFromObject(Object o)
Converts an object to a long value. 
if (o != null) {
    if (o instanceof Integer) {
        return ((Integer) o).longValue();
    if (o instanceof Long) {
        return ((Long) o).longValue();
    if (o instanceof Double) {
...
LongtoLongAsObject(Object obj)
to Long As Object 
if (obj != null) {
    if (obj instanceof Long) {
        return (Long) obj;
    } else {
        try {
            return Long.parseLong(String.valueOf(obj));
        } catch (Exception e) {
return null;
longtoLongBE(byte[] b, int i)
to Long BE 
return (((long) b[i + 0] << 56) + ((long) (b[i + 1] & 255) << 48) + ((long) (b[i + 2] & 255) << 40)
        + ((long) (b[i + 3] & 255) << 32) + ((long) (b[i + 4] & 255) << 24) + ((b[i + 5] & 255) << 16)
        + ((b[i + 6] & 255) << 8) + ((b[i + 7] & 255) << 0));
longtoLongBE(byte[] src, int offset)
64bit to long 
return (((src[offset] & 0xFFl) << 56l) + ((src[++offset] & 0xFFl) << 48l) + ((src[++offset] & 0xFFl) << 40l)
        + ((src[++offset] & 0xFFl) << 32l) + ((src[++offset] & 0xFFl) << 24l)
        + ((src[++offset] & 0xFFl) << 16l) + ((src[++offset] & 0xFFl) << 8l) + (src[++offset] & 0xFFl));
StringtoLongDate()
to Long Date 
return String.valueOf(toLongTime());
longtoLongDefaultIfNull(Long configured, long theDefault)
to Long Default If Null 
return configured != null ? configured.longValue() : theDefault;
longtoLongExactWithoutOverflow(float value)
Like Math#toIntExact(long) but for long range. 
if (value < Long.MIN_VALUE || value > Long.MAX_VALUE) {
    throw new ArithmeticException("long overflow");
return (long) value;
LongtoLongId(Integer i)
to Long Id 
if (i == null)
    return null;
return Long.valueOf(i.longValue());
longtoLongInt(byte[] b)
to Long Int 
if (b.length > 8)
    throw new NumberFormatException("long has only 8 bytes");
long i = 0;
for (byte x : b) {
    i <<= 8;
    i |= (x & 0xFF);
return i;
...