Create local maven Helpers repository

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

.gitignore

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+/.metadata/
+/.recommenders/
+/RemoteSystemsTempFiles/
+.settings/

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>JDate</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+	</natures>
+</projectDescription>

README.md

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+# JDate
+
+Static methods:
+
+defaultDateFormat = "dd-MM-yyyy"
+defaultTimeFormat = "HH:mm:ss"
+
+    void setDefaultDateFormat(String format)
+    void setDefaultTimeFormat(String format)
+    
+    Date getDate(String date) 
+    Date getDate(String date, String time)
+    String getDate(Date date)
+    String getTime(Date date) 
+
+    Date setDate(Date date, String set)
+    Date setTime(Date date, String set)
+
+
+    int getDay(Date date)
+    int getMonth(Date date) // 0-January, 1-February, ... 11-December
+    int getCorrectMonth(Date date) // human-like month numeration (1-January, 2-February, ... 12-December)
+    int getYear(Date date)
+
+    Date incDay(Date date, int days)
+    Date incMonth(Date date, int months)
+    Date incYear(Date date, int years)
+
+    Date nullTime(Date date)
+    long getDifferenceDays(Date from, Date to) 
+    int getDifferenceYears(Date from, Date to) 
+

pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.gmail.develop.jcant</groupId>
+	<artifactId>JDate</artifactId>
+	<version>1.6</version>
+	<packaging>jar</packaging>
+
+	<name>JDate</name>
+	<description>Date/Time routines</description>
+	<url>https://github.com/jcant/JDate.git</url>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+
+	</dependencies>
+<!-- 
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.7.0</version>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+-->
+</project>

src/main/java/com/gmail/develop/jcant/JDate.java

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+package com.gmail.develop.jcant;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+public class JDate {
+
+    private static String defaultDateFormat = "dd-MM-yyyy";
+    private static String defaultTimeFormat = "HH:mm:ss";
+
+    public static void setDefaultDateFormat(String format) {
+        defaultDateFormat = format;
+    }
+
+    public static void setDefaultTimeFormat(String format) {
+        defaultTimeFormat = format;
+    }
+
+    // --- static ---
+    public static Date getDate(String date) {
+        SimpleDateFormat sdf = new SimpleDateFormat(defaultDateFormat);
+        Date result = null;
+        try {
+            result = sdf.parse(date);
+        } catch (ParseException e) {
+            System.err.println("Error getting quick date!");
+        }
+        return result;
+    }
+
+    public static Date getDate(String date, String time){
+        return setTime(getDate(date), time);
+    }
+
+    public static String getDate(Date date) {
+        SimpleDateFormat sdf = new SimpleDateFormat(defaultDateFormat);
+        String result = sdf.format(date);
+        return result;
+    }
+
+    public static Date setDate(Date date, String set){
+        if (date == null) {
+            throw new IllegalArgumentException();
+        }
+        Calendar our = Calendar.getInstance();
+        Calendar setter = Calendar.getInstance();
+        our.setTime(date);
+        SimpleDateFormat sdf = new SimpleDateFormat(defaultDateFormat);
+        try {
+            setter.setTime(sdf.parse(set));
+        } catch (ParseException e) {
+            e.printStackTrace();
+        }
+
+        our.set(setter.get(Calendar.YEAR), setter.get(Calendar.MONTH), setter.get(Calendar.DAY_OF_MONTH));
+        return our.getTime();
+    }
+
+    public static String getTime(Date date) {
+        SimpleDateFormat sdf = new SimpleDateFormat(defaultTimeFormat);
+        String result = sdf.format(date);
+        return result;
+    }
+
+    public static Date setTime(Date date, String set){
+        if (date == null) {
+            throw new IllegalArgumentException();
+        }
+        Calendar our = Calendar.getInstance();
+        Calendar setter = Calendar.getInstance();
+        our.setTime(date);
+        SimpleDateFormat sdf = new SimpleDateFormat(defaultTimeFormat);
+        try {
+            setter.setTime(sdf.parse(set));
+        } catch (ParseException e) {
+            e.printStackTrace();
+        }
+
+        our.set(Calendar.HOUR_OF_DAY, setter.get(Calendar.HOUR_OF_DAY));
+        our.set(Calendar.MINUTE, setter.get(Calendar.MINUTE));
+        our.set(Calendar.SECOND, 0);
+        return our.getTime();
+    }
+    
+    public static Date nullTime(Date date){
+        if (date == null) {
+            throw new IllegalArgumentException();
+        }
+        Calendar our = Calendar.getInstance();
+        our.setTime(date);
+        our.set(Calendar.HOUR_OF_DAY, 0);
+        our.set(Calendar.MINUTE, 0);
+        our.set(Calendar.SECOND, 0);
+        our.set(Calendar.MILLISECOND, 0);
+        return our.getTime();
+    }
+
+    public static long getDifferenceDays(Date from, Date to) {
+    	long msDiff = to.getTime() - from.getTime();
+    	long diff =  TimeUnit.DAYS.convert(msDiff, TimeUnit.MILLISECONDS);
+
+        return diff;
+    }
+    
+    public static int getDifferenceYears(Date from, Date to) {
+        Calendar dayFrom = Calendar.getInstance();
+        dayFrom.setTime(from);
+        Calendar dayTo = Calendar.getInstance();
+        dayTo.setTime(to);
+
+        int diff = dayTo.get(Calendar.YEAR) - dayFrom.get(Calendar.YEAR);
+        dayTo.set(Calendar.YEAR, dayFrom.get(Calendar.YEAR));
+
+        if (dayFrom.compareTo(dayTo) >= 0) {
+            diff--;
+        }
+
+        return diff;
+    }
+
+    public static int getDay(Date date) {
+        Calendar day = Calendar.getInstance();
+        day.setTime(date);
+        return day.get(Calendar.DAY_OF_MONTH);
+    }
+    
+    // 0-January, 1-February, ... 11-December
+    public static int getMonth(Date date) {
+        Calendar day = Calendar.getInstance();
+        day.setTime(date);
+        return day.get(Calendar.MONTH);
+    }
+    
+    // human-like month numeration
+    public static int getCorrectMonth(Date date) {     
+        return getMonth(date) + 1;
+    }
+    
+    public static int getYear(Date date) {
+        Calendar day = Calendar.getInstance();
+        day.setTime(date);
+        return day.get(Calendar.YEAR);
+    }
+    
+    public static Date incDay(Date date, int days) {
+        Calendar day = Calendar.getInstance();
+        day.setTime(date);
+        day.add(Calendar.DAY_OF_MONTH, days);
+        return day.getTime();
+    }
+
+    public static Date incMonth(Date date, int months) {
+        Calendar day = Calendar.getInstance();
+        day.setTime(date);
+        day.add(Calendar.MONTH, months);
+        return day.getTime();
+    }
+
+    public static Date incYear(Date date, int years) {
+        Calendar day = Calendar.getInstance();
+        day.setTime(date);
+        day.add(Calendar.YEAR, years);
+        return day.getTime();
+    }
+
+    //this is comment
+}

target/classes/META-INF/MANIFEST.MF

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+Manifest-Version: 1.0
+Built-By: jcant
+Build-Jdk: 11.0.4
+Created-By: Maven Integration for Eclipse
+

target/classes/META-INF/maven/com.gmail.develop.jcant/JDate/pom.properties

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+#Generated by Maven Integration for Eclipse
+#Sun Aug 18 20:54:17 EEST 2019
+m2e.projectLocation=/home/jcant/LuckyProject/Helpers/JDate
+m2e.projectName=JDate
+groupId=com.gmail.develop.jcant
+artifactId=JDate
+version=1.6

target/classes/META-INF/maven/com.gmail.develop.jcant/JDate/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.gmail.develop.jcant</groupId>
+	<artifactId>JDate</artifactId>
+	<version>1.6</version>
+	<packaging>jar</packaging>
+
+	<name>JDate</name>
+	<description>Date/Time routines</description>
+	<url>https://github.com/jcant/JDate.git</url>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+
+	</dependencies>
+<!-- 
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.7.0</version>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+-->
+</project>

target/maven-archiver/pom.properties

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+#Generated by Maven
+#Sun Aug 18 20:50:28 EEST 2019
+groupId=com.gmail.develop.jcant
+artifactId=JDate
+version=1.6

target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst

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+/home/jcant/LuckyProject/Helpers/JDate/src/main/java/com/gmail/develop/jcant/JDate.java