Vararg und Vererbung
parent
8e305277a7
commit
09a63d8d9c
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@ -1,6 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<fileset-config file-format-version="1.2.0" simple-config="false" sync-formatter="true">
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<fileset-config file-format-version="1.2.0" simple-config="false" sync-formatter="false">
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<local-check-config name="maven-checkstyle-plugin validate" location="file:/C:/Users/KTS%20Nitro%205/git/uebungen/sources/checkstyle.xml" type="remote" description="maven-checkstyle-plugin configuration validate">
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<property name="checkstyle.header.file" value="C:\Users\KTS Nitro 5\eclipse-workspace\PR2\.metadata\.plugins\org.eclipse.core.resources\.projects\sources\com.basistech.m2e.code.quality.checkstyleConfigurator\checkstyle-header-validate.txt"/>
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<property name="checkstyle.cache.file" value="${project_loc}/target/checkstyle-cachefile"/>
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@ -10,11 +10,6 @@
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>net.sf.eclipsecs.core.CheckstyleBuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.m2e.core.maven2Builder</name>
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<arguments>
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@ -24,6 +19,5 @@
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<natures>
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<nature>org.eclipse.m2e.core.maven2Nature</nature>
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<nature>org.eclipse.jdt.core.javanature</nature>
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<nature>net.sf.eclipsecs.core.CheckstyleNature</nature>
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</natures>
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</projectDescription>
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@ -1,26 +1,28 @@
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package pr2.vererbung.singleton_einfach;
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public class Singleton {
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public final class Singleton {
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private static String name;
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Singleton sl = new Singleton("Alleine");
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private String name;
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public Singleton(String name) {
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if (sl == null) {
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this.setName(name);
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public static final Singleton SL = new Singleton();
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private Singleton() {
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}
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private Singleton(String name) {
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this.name = name;
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}
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public static String getName() {
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return SL.name;
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}
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public static Singleton getInstance(String name) {
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if (SL == null) {
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return new Singleton(name);
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} else {
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getInfo();
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return SL;
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}
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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Singleton.name = name;
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}
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public String getInfo() {
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return "Der Singleton exsistiert bereits";
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}
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}
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@ -1,15 +1,31 @@
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package pr2.vererbung.singleton_einfach;
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import static org.junit.Assert.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import org.junit.Test;
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public class SingletonTest {
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@SuppressWarnings("static-access")
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@Test
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public void testVomSingleton() {
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Singleton sl = new Singleton("Walter");
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assertEquals("Walter", sl.getName());
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assertEquals("Alleine", Singleton.getName());
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assertEquals("Alleine", Singleton.getInstance("Alleine").getName());
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assertFalse(false);
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}
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public void testNeueInstanz() {
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Singleton NN = Singleton.getInstance("Hubert");
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assertEquals("Hubert", Singleton.getName());
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}
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}
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@ -1,5 +1,13 @@
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package pr2.vererbung.ueberschreiben_lebewesen;
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public class Amoebe {
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public class Amoebe extends Lebewesen {
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public Amoebe() {
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}
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@Override
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public void bewegen() {
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System.out.println("Schleimen");
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}
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}
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@ -1,5 +1,17 @@
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package pr2.vererbung.ueberschreiben_lebewesen;
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public class Dackel {
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public class Dackel extends Lebewesen {
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public Dackel() {
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}
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@Override
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public void bewegen() {
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System.out.println("Auf kurzen Beinen vorwärts wackeln");
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}
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public void bellen() {
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System.out.println("Wau, wau");
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}
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}
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@ -2,4 +2,11 @@ package pr2.vererbung.ueberschreiben_lebewesen;
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public class Lebewesen {
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public Lebewesen() {
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}
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public void bewegen() {
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}
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}
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@ -3,6 +3,26 @@ package pr2.vererbung.ueberschreiben_lebewesen;
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public class Main {
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public static void main(String[] args) {
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// TODO: Lebewesen testen
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Lebewesen l1 = new Dackel();
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Lebewesen l2 = new Amoebe();
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l1.bewegen();
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l2.bewegen();
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if ((l1) instanceof Dackel) {
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((Dackel) l1).bellen();
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} else {
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System.out.println("l1 ist noch keine Instanz von Dackel");
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}
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if (((Dackel) l1) instanceof Dackel) {
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((Dackel) l1).bellen();
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} else {
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System.out.println("l1 ist keine Instanz von Dackel");
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}
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}
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}
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@ -2,4 +2,16 @@ package pr2.vererbung.vararg_summe;
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public class Summator {
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public Summator() {
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}
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public int sum(int...a) {
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int b = 0;
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for (int i = 0; i < a.length; i++) {
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b = b + a[i];
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}
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return b;
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}
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}
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@ -9,16 +9,16 @@ public class SummatorTest {
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@Test
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void testSum() {
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// TODO: Einkommentieren
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// Summator s = new Summator();
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// assertEquals(3, s.sum(1, 2));
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// assertEquals(1, s.sum(-1, 2));
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// assertEquals(6, s.sum(1, 2, 3));
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// assertEquals(0, s.sum(1, 2, -3));
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// assertEquals(10, s.sum(1, 2, 3, 4));
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// assertEquals(2, s.sum(1, 2, 3, -4));
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// assertEquals(15, s.sum(1, 2, 3, 4, 5));
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// assertEquals(5, s.sum(1, 2, 3, 4, -5));
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// assertEquals(36, s.sum(1, 2, 3, 4, 5, 6, 7, 8));
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Summator s = new Summator();
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assertEquals(3, s.sum(1, 2));
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assertEquals(1, s.sum(-1, 2));
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assertEquals(6, s.sum(1, 2, 3));
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assertEquals(0, s.sum(1, 2, -3));
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assertEquals(10, s.sum(1, 2, 3, 4));
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assertEquals(2, s.sum(1, 2, 3, -4));
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assertEquals(15, s.sum(1, 2, 3, 4, 5));
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assertEquals(5, s.sum(1, 2, 3, 4, -5));
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assertEquals(36, s.sum(1, 2, 3, 4, 5, 6, 7, 8));
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}
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}
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