com.arxanfintech.common.util

Class Utils

java.lang.Object

com.arxanfintech.common.util.Utils

public class Utils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static double	JAVA_VERSION

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Modifier and Type	Method and Description
static byte[]	addressStringToBytes(String hex) Decodes a hex string to address bytes and checks validity
static String	align(String s, char fillChar, int targetLen, boolean alignRight)
static long	fromUnixTime(long unixTime)
static String	getAddressShortString(byte[] addr)
static String	getHashListShort(List<byte[]> blockHashes)
static ImageIcon	getImageIcon(String resource)
static String	getNodeIdShort(String nodeId)
static SecureRandom	getRandom()
static String	getValueShortString(BigInteger number)
static boolean	isValidAddress(byte[] addr)
static Map<String,String>	JsonToMap(com.alibaba.fastjson.JSONObject json)
static String	longToDateTime(long timestamp) Return formatted Date String: yyyy.MM.dd HH:mm:ss Based on Unix's time() input in seconds
static <T> T[]	mergeArrays(T[]... arr)
static String	repeat(String s, int n)
static long	toUnixTime(long javaTime)
static BigInteger	unifiedNumericToBigInteger(String number)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

JAVA_VERSION

public static double JAVA_VERSION

Constructor Detail

Utils

public Utils()

Method Detail

unifiedNumericToBigInteger

public static BigInteger unifiedNumericToBigInteger(String number)

Parameters:

number - should be in form '0x34fabd34....'

Returns:

String

longToDateTime

public static String longToDateTime(long timestamp)

Return formatted Date String: yyyy.MM.dd HH:mm:ss Based on Unix's time() input in seconds

Parameters:

timestamp - seconds since start of Unix-time

Returns:

String formatted as - yyyy.MM.dd HH:mm:ss

getImageIcon

public static ImageIcon getImageIcon(String resource)

getValueShortString

public static String getValueShortString(BigInteger number)

addressStringToBytes

public static byte[] addressStringToBytes(String hex)

Decodes a hex string to address bytes and checks validity

Parameters:

hex - - a hex string of the address, e.g., 6c386a4b26f73c802f34673f7248bb118f97424a

Returns:

- decode and validated address byte[]

isValidAddress

public static boolean isValidAddress(byte[] addr)

getAddressShortString

public static String getAddressShortString(byte[] addr)

Parameters:

addr - length should be 20

Returns:

short string represent 1f21c...

getRandom

public static SecureRandom getRandom()

getHashListShort

public static String getHashListShort(List<byte[]> blockHashes)

getNodeIdShort

public static String getNodeIdShort(String nodeId)

toUnixTime

public static long toUnixTime(long javaTime)

fromUnixTime

public static long fromUnixTime(long unixTime)

mergeArrays

public static <T> T[] mergeArrays(T[]... arr)

align

public static String align(String s,
                           char fillChar,
                           int targetLen,
                           boolean alignRight)

repeat

public static String repeat(String s,
                            int n)

JsonToMap

public static Map<String,String> JsonToMap(com.alibaba.fastjson.JSONObject json)
                                    throws com.alibaba.fastjson.JSONException

Throws:

com.alibaba.fastjson.JSONException