ru.dlabs71.library.email.util

Class JavaCoreUtils

java.lang.Object

ru.dlabs71.library.email.util.JavaCoreUtils

public class JavaCoreUtils
extends Object

The utility class contains helpful method for working with Java Core.

Project name: d-email

Creation date: 2023-10-25

Since:

1.0.0

Author:

Ivanov Danila

Constructor Summary

Constructors

Constructor and Description
JavaCoreUtils()

Method Summary

Modifier and Type	Method and Description
LocalDateTime	convert(Date date) Converts Date to LocalDateTime.
<T> Map<String,T>	makeMap(String key, T value) Returns a Map contains entry with key and value from arguments.
<T> Map<String,T>	makeMap(String key1, T value1, String key2, T value2) Returns a Map contains entry with key and value from arguments.
void	notNullArgument(Object object, String argName) If the input parameter 'object' is null, then throw an IllegalArgumentException.
static byte[]	toByteArray(InputStream in) It converts Input Stream to byte array.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaCoreUtils

public JavaCoreUtils()

Method Detail

toByteArray

public static byte[] toByteArray(InputStream in)
                          throws IOException

It converts Input Stream to byte array.

Parameters:

in - sourced input stream

Returns:

byte array

Throws:

IOException - error in the read input stream

convert

public LocalDateTime convert(Date date)

Converts Date to LocalDateTime.

Parameters:

date - input date

Returns:

LocalDateTime

notNullArgument

public void notNullArgument(Object object,
                            String argName)

If the input parameter 'object' is null, then throw an IllegalArgumentException.

Parameters:

object - an object being checked

argName - Name parameter for a message of the exception

Throws:

IllegalArgumentException - if the 'object' parameter is null

makeMap

public <T> Map<String,T> makeMap(String key,
                                 T value)

Returns a Map contains entry with key and value from arguments.

Type Parameters:

T - a type of value object

Parameters:

key - a key of Entry Map

value - a value of Entry Map

makeMap

public <T> Map<String,T> makeMap(String key1,
                                 T value1,
                                 String key2,
                                 T value2)

Returns a Map contains entry with key and value from arguments.

Type Parameters:

T - a type of value object