Java Utililty Methods Bits Convert to

List of utility methods to do Bits Convert to

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Description

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

Method

StringbitStr(long value)
bit Str 
StringBuffer buf = new StringBuffer();
for (int i = 0; i < Long.SIZE; i++) {
    buf.append((value & 0x01) + "");
    value >>= 1;
buf.reverse();
return buf.toString();
StringbitString(boolean value)
Return a string representation of "0" or "1" as the value of a boolean. 
return value ? "1" : "0";
StringbitString(byte b)
bit String 
StringBuilder buff = new StringBuilder();
boolean[] array = byteToBitArray(b);
for (int i = 0; i < array.length; i++) {
    buff.append(array[i] ? 1 : 0);
return buff.toString();
bytebitString2byte(String str)
bit Stringbyte 
int res = 0;
if (str.length() > 8)
    throw new UnsupportedOperationException("string length may be max 8");
for (int i = 0; i < str.length(); i++) {
    res = res << 1;
    if ('1' == str.charAt(i)) {
        res |= 1;
    } else if ('0' == str.charAt(i)) {
...
intbitStringToInt(String bits, char one)
bit String To Int 
int result = 0;
int len = bits.length();
for (int i = 0; i < len; i++) {
    if (bits.charAt(i) == one)
        result |= 1 << (len - i - 1);
return result;
intbitsUsed(long value)
bits Used 
if (value < 0)
    return 64;
for (int i = 62; i > 0; i--)
    if (((value >> i) & 1) == 1)
        return i + 1;
return 1;
booleanbitTest(String value, int pos)
Bit Test - test the bit for the given position in the given string Passing pos = 0 and value = "100" would yield false Passing pos = 1 and value = "100" would yield false Passing pos = 2 and value = "100" would yield true 
int valueLength = value.length();
if (pos >= valueLength) {
    return false;
int charPos = valueLength - pos - 1;
char bit = value.charAt(charPos);
return (bit == '1');
booleanbitToBoolean(byte b)
bit To Boolean 
if (0 == b)
    return false;
else
    return true;
booleanbitToBoolean(final byte value, final int bitNbr)
Gets the bit state of a specific bit from a byte as boolean. 
if (bitNbr < 0 || bitNbr > 7) {
    throw new IllegalArgumentException("Parameter bitNbr is out of range (0-7)");
return (value & BIT[bitNbr]) != 0;
longbitToLong(byte[] bytes, int offset, int length)
Interpret a BIT value as a long. 
long valueAsLong = 0;
for (int i = 0; i < length; i++) {
    valueAsLong = valueAsLong << 8 | bytes[offset + i] & 0xff;
return valueAsLong;