Initial Commit

build.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="Date" default="default" basedir=".">
+    <description>Builds, tests, and runs the project Date.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="Date-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

manifest.mf

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+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

nbproject/genfiles.properties

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+build.xml.data.CRC32=08068b56
+build.xml.script.CRC32=abd2dbd5
+build.xml.stylesheet.CRC32=f85dc8f2@1.116.0.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=08068b56
+nbproject/build-impl.xml.script.CRC32=f1e3a3c2
+nbproject/build-impl.xml.stylesheet.CRC32=12e0a6c2@1.116.0.48

nbproject/private/private.properties

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+compile.on.save=true
+user.properties.file=/home/Verde/.netbeans/27/build.properties

nbproject/project.properties

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+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=false
+annotation.processing.processor.options=
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.modulepath=\
+    ${run.modulepath}
+debug.test.classpath=\
+    ${run.test.classpath}
+debug.test.modulepath=\
+    ${run.test.modulepath}
+# Files in build.classes.dir which should be excluded from distribution jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/Date.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+dist.jlink.dir=${dist.dir}/jlink
+dist.jlink.output=${dist.jlink.dir}/Date
+excludes=
+includes=**
+jar.compress=false
+javac.classpath=
+# Space-separated list of extra javac options
+javac.compilerargs=
+javac.deprecation=false
+javac.external.vm=true
+javac.modulepath=
+javac.processormodulepath=
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=25
+javac.target=25
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.modulepath=\
+    ${javac.modulepath}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=false
+javadoc.encoding=${source.encoding}
+javadoc.html5=false
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=
+# The jlink additional root modules to resolve
+jlink.additionalmodules=
+# The jlink additional command line parameters
+jlink.additionalparam=
+jlink.launcher=true
+jlink.launcher.name=Date
+main.class=date.Date
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.modulepath=\
+    ${javac.modulepath}
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+run.test.modulepath=\
+    ${javac.test.modulepath}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

nbproject/project.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>Date</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

src/date/Date.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Main.java to edit this template
+ */
+package date;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Scanner;
+
+/**
+ *
+ * @author Verde
+ */
+public class Date {
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args){
+        Scanner sc = new Scanner(System.in);
+        SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");
+        System.out.println("Inserisci la data:");
+        String dataS = sc.nextLine();
+        java.util.Date data = null;
+        try {
+            data = sdf.parse(dataS); //da stringa a data
+           
+        } catch (ParseException ex) {
+            System.out.println("Errore nella lettura della data.");
+        }
+        System.out.println(data);
+        
+        String dataStringa  = sdf.format(data); //da data a stringa
+        System.out.println(dataStringa);
+
+
+        sdf = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
+        System.out.println("Inserisci un'altra data:");
+        dataS = sc.nextLine();
+        data = null;
+        try {
+            data = sdf.parse(dataS); //da stringa a data
+           
+        } catch (ParseException ex) {
+            System.out.println("Errore nella lettura della data");
+        }
+        System.out.println(data);
+        
+        dataStringa  = sdf.format(data); //da data a stringa
+        System.out.println(dataStringa);
+
+        sdf = new SimpleDateFormat("dd-MM-yyyy G hh:mm:ss z");
+        System.out.println("Inserisci un'altra data:");
+        dataS = sc.nextLine();
+        data = null;
+        try {
+            data = sdf.parse(dataS); //da stringa a data
+           
+        } catch (ParseException ex) {
+            System.out.println("Errore nella lettura della data");
+        }
+        System.out.println(data);
+        
+        dataStringa  = sdf.format(data); //da data a stringa
+        System.out.println(dataStringa);
+        
+        /*
+        //Calendar c = new Calendar();//La classe Calendar è una classe astratta, per cui non si può instanziare in questo modo
+        Calendar c = Calendar.getInstance();
+        
+        // come usare l'istanza di Calendar?
+        // Calendar offre molti metodi che possono essere utili
+        //1. per estrarre la data di oggi
+        Date data1 = c.getTime();
+        System.out.println(data1);
+        SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/YYYY hh:mm:ss");
+        String sDataOdierna = sdf.format(data1);
+        System.out.println("DATA ODIERNA TEST.0: " + sDataOdierna);
+        
+        //2. per estrarre dalla data di oggi i valori di giorno, mese e anno
+        int giorno = c.get(Calendar.DAY_OF_MONTH);
+        int mese = c.get(Calendar.MONTH); //ATTENZIONE: 0 = Gennaio, 11=Dicembre
+        int anno = c.get(Calendar.YEAR);
+        System.out.println("DATA ODIERNA TEST.1: Il giorno è " + giorno + " il mese è "+ (mese +1) +  " l'anno è " + anno);
+        
+        Calendar c3 = Calendar.getInstance();
+        //4. per impostare la data a quella odierna
+        Date d = new Date(); //la data può essere acquisita anche dall'utente che la digita a tastiera
+        c3.setTime(d);
+        System.out.println("DATA ODIERNA TEST.2: Il giorno è " + c3.get(Calendar.DAY_OF_MONTH) + " il mese è "+  (c3.get(Calendar.MONTH) +1)+ ") l'anno è " + c3.get(Calendar.YEAR));
+        
+        Calendar c2 = Calendar.getInstance();
+        //4. per impostare una data specifica diversa da quella odierna
+        c2.set(Calendar.DAY_OF_MONTH, 26);
+        c2.set(Calendar.MONTH, 0); //ATTENZIONE: 0 = Gennaio, 11=Dicembre
+        c2.set(Calendar.YEAR, 2023);
+        Date data2 = c2.getTime();
+        SimpleDateFormat sdf2 = new SimpleDateFormat("dd/MM/YYYY");
+        String sData2 = sdf2.format(data2);
+        System.out.println("DATA QUALSIASI: La data specificata è " + sData2);
+        
+        //5. metodi per confronto
+        if (c2.before(c)){
+            System.out.println(sData2 + " è precedente a " + sDataOdierna);
+        } else {
+             System.out.println(sData2 + " è posteriore a " + sDataOdierna);
+        }
+        
+        //prova ad approfondire e usare altri metodi!!!*/
+        
+    }
+}
+