Java Utililty Methods Formatter Usage

List of utility methods to do Formatter Usage

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Description

The list of methods to do Formatter Usage are organized into topic(s).

Method

StringalterationValueToString(double value)
Format percentage. 
if (0.0 < value && value <= 0.01) {
    return "<1%";
Formatter f = new Formatter();
f.format("%.0f", value * 100.0);
return f.out().toString() + "%";
Formatterappend(final CharSequence seq, final Formatter formatter, final int flags, final int width, final int precision)
Handles the common Formattable operations of truncate-pad-append, with no ellipsis on precision overflow, and padding width underflow with spaces. 
return append(seq, formatter, flags, width, precision, ' ', null);
StringasFormattedStr(String format, String eol, Object... objects)
as Formatted Str 
Formatter f = new Formatter();
String s = f.format(format + "%s", objects, eol).toString();
f.close();
return s;
voidassertion(final boolean test, final String fmt, final Object... params)
assertion 
if (test) {
    return;
final Formatter f = new Formatter();
throw new RuntimeException(f.format(fmt, params).toString());
Stringbyte2Mac(final byte[] m)
byte Mac 
final StringBuilder result = new StringBuilder(17);
final Formatter formatter = new Formatter(result);
formatter.format("%02x:%02x:%02x:%02x:%02x:%02x", m[0], m[1], m[2], m[3], m[4], m[5]);
formatter.close();
return result.toString();
StringbyteArray2Hex(byte[] hash)
byte Array Hex 
Formatter formatter = new Formatter();
for (byte b : hash) {
    formatter.format("%02x", b);
return formatter.toString();
StringbyteArray2Hex(final byte[] hash)
Converts an input byte array to a hex encoded String. 
Formatter formatter = new Formatter();
for (byte b : hash) {
    formatter.format("%02x", b);
return formatter.toString();
StringbyteArray2HexString(byte[] buf)
byte Array Hex String 
return byteArray2HexString(buf, ',');
StringbyteArrayToHex(final byte[] hash)
Get the hex string representation of a given byte array 
String result;
Formatter formatter = new Formatter();
try {
    for (byte b : hash) {
        formatter.format("%02x", b);
    result = formatter.toString();
} catch (Exception lEx) {
...
StringbyteArrayToHexString(byte[] bytes)
byte Array To Hex String 
@SuppressWarnings("resource")
Formatter fmt = new Formatter(new StringBuilder(bytes.length * 2));
for (byte b : bytes) {
    fmt.format("%02x", b);
return fmt.toString();