Package me.saro.commons

Class Utils

java.lang.Object

me.saro.commons.Utils

public class Utils
extends java.lang.Object

util class

Since:

0.1

Author:

PARK Yong Seo

Method Summary

Modifier and Type	Method	Description
static boolean	blank(java.lang.String val)	is blank
static java.lang.String	bvl(java.lang.String... list)	Blank Value Logic
static java.lang.String	createRandomBase62String(int min, int max)	create random base62 string base62 : [ A-Z a-z 0-9 ]
static java.lang.String	createRandomString(char[] mold, int len)	create random string
static java.lang.String	createRandomString(char[] mold, int min, int max)	create random string
static java.lang.String	evl(java.lang.String... list)	Empty Value Logic
static <T,R> java.util.List<R>	executeAllThreads(int nThreads, java.util.List<T> list, ThrowableFunction<T,R> map)	execute all threads
static <T,R> java.util.List<R>	executeAllThreads(java.util.concurrent.ExecutorService executorService, java.util.List<T> list, ThrowableFunction<T,R> map)	execute all threads WARNING : this method does not shutdown to ExecutorService instance
static <T> T	inputStreamLineReader(java.io.InputStream inputStream, java.lang.String charset, ThrowableFunction<java.util.stream.Stream<java.lang.String>,T> lineReader)	inputStream line reader WARNING : is not auto closed
static void	inputStreamReader(java.io.InputStream inputStream, StreamReadConsumer callback)	InputStream Reader WARNING : is not auto closed
static void	kill(java.io.Closeable closeable)	forced close without exception
static void	kill(java.lang.Thread thread)	kill thread without exception
static void	linkStream(java.io.InputStream is, java.io.OutputStream os)	link input to output stream WARNING : is not auto closed
static java.lang.String	norNumber(java.lang.String number)	normalize number 1,000 -> 1000 -000123 -> -123 +0001,234 -> 1234 000123 -> 123 123.00 -> 123 " 123,456" -> 123456
static <T> T	nvl(T... list)	Null Value Logic
static double	parseDouble(java.lang.String doubleValue)	String to double
static long	parseLong(java.lang.String longValue)	String to long
static long	random(long min, long max)	get random
static java.util.TimerTask	timerTask(ThrowableConsumer<java.util.TimerTask> task)	timertask
static long	timestamp(ThrowableRunnable runnable)	timestamp check time of the runnable
static java.lang.String	zerofill(int val, int length)	zerofill
static java.lang.String	zerofill(long val, int length)	zerofill
static java.lang.String	zerofill(java.lang.String number, int length)	zerofill

Methods inherited from class java.lang.Object

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

Method Detail

nvl

@SafeVarargs
public static <T> T nvl(T... list)

Null Value Logic

Parameters:

list - nullable data

Returns:

- first not null data
- if has not null data return null

evl

public static java.lang.String evl(java.lang.String... list)

Empty Value Logic

Parameters:

list - nullable String

Returns:

- first not null and not empty string
- if not found return null

bvl

public static java.lang.String bvl(java.lang.String... list)

Blank Value Logic

Parameters:

list - nullable String

Returns:

- first not null and not blank string
- if not found return null

blank

public static boolean blank(java.lang.String val)

is blank

Parameters:

val -

Returns:

zerofill

public static java.lang.String zerofill(java.lang.String number,
                                        int length)

zerofill

Parameters:

number -

length -

Returns:

zerofill

public static java.lang.String zerofill(long val,
                                        int length)

zerofill

Parameters:

val -

length -

Returns:

zerofill

public static java.lang.String zerofill(int val,
                                        int length)

zerofill

Parameters:

val -

length -

Returns:

norNumber

public static java.lang.String norNumber(java.lang.String number)

normalize number 1,000 -> 1000 -000123 -> -123 +0001,234 -> 1234 000123 -> 123 123.00 -> 123 " 123,456" -> 123456

Parameters:

number -

Returns:

parseDouble

public static double parseDouble(java.lang.String doubleValue)

String to double

Parameters:

doubleValue -

Returns:

parseLong

public static long parseLong(java.lang.String longValue)

String to long

Parameters:

longValue -

Returns:

linkStream

public static void linkStream(java.io.InputStream is,
                              java.io.OutputStream os)
                       throws java.io.IOException

link input to output stream
WARNING : is not auto closed

Parameters:

is -

os -

Throws:

java.io.IOException

createRandomString

public static java.lang.String createRandomString(char[] mold,
                                                  int len)

create random string

Parameters:

mold - base mold for create random string

len - create langth

Returns:

random string

createRandomString

public static java.lang.String createRandomString(char[] mold,
                                                  int min,
                                                  int max)

create random string

Parameters:

mold - base mold for create random string

min - min length

max - max length

Returns:

create random string min <= return value <= max

createRandomBase62String

public static java.lang.String createRandomBase62String(int min,
                                                        int max)

create random base62 string
base62 : [ A-Z a-z 0-9 ]

Parameters:

min - min length

max - max length

Returns:

random

public static long random(long min,
                          long max)

get random

Parameters:

min - min length

max - max length

Returns:

min <= return value <= max

inputStreamReader

public static void inputStreamReader(java.io.InputStream inputStream,
                                     StreamReadConsumer callback)
                              throws java.lang.Exception

InputStream Reader
WARNING : is not auto closed

Parameters:

inputStream -

callback - stream read callback

Throws:

java.lang.Exception

inputStreamLineReader

public static <T> T inputStreamLineReader(java.io.InputStream inputStream,
                                          java.lang.String charset,
                                          ThrowableFunction<java.util.stream.Stream<java.lang.String>,T> lineReader)
                                   throws java.lang.Exception

inputStream line reader
WARNING : is not auto closed

Parameters:

charset -

inputStream -

lineReader -

Returns:

return of the lineReader

Throws:

java.lang.Exception

executeAllThreads

public static <T,R> java.util.List<R> executeAllThreads(java.util.concurrent.ExecutorService executorService,
                                                              java.util.List<T> list,
                                                              ThrowableFunction<T,R> map)

execute all threads WARNING : this method does not shutdown to ExecutorService instance

Parameters:

executorService -

list -

map -

Returns:

map result list

Since:

0.3

executeAllThreads

public static <T,R> java.util.List<R> executeAllThreads(int nThreads,
                                                              java.util.List<T> list,
                                                              ThrowableFunction<T,R> map)

execute all threads

Parameters:

nThreads -

list -

map -

Returns:

map result list

Since:

0.3

kill

public static void kill(java.io.Closeable closeable)

forced close without exception

Parameters:

closeable -

kill

public static void kill(java.lang.Thread thread)

kill thread without exception

Parameters:

thread -

timerTask

public static java.util.TimerTask timerTask(ThrowableConsumer<java.util.TimerTask> task)

timertask

Parameters:

task -

Returns:

timestamp

public static long timestamp(ThrowableRunnable runnable)

timestamp
check time of the runnable

Parameters:

runnable -

Returns:

timeMillis