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coupling in java
1 parent dce3078 commit 3efa634

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‎.gitignore

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/.metadata/

‎Loose_Coupling_1/.classpath

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
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<attributes>
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<attribute name="module" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>

‎Loose_Coupling_1/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Loose_Coupling_1</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>

‎Loose_Coupling_1/.settings/org.eclipse.core.resources.prefs

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eclipse.preferences.version=1
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encoding/<project>=UTF-8

‎Loose_Coupling_1/.settings/org.eclipse.jdt.core.prefs

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=17
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
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org.eclipse.jdt.core.compiler.release=enabled
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org.eclipse.jdt.core.compiler.source=17

‎Loose_Coupling_1/bin/com/masai/main/Bike.class

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‎Loose_Coupling_1/bin/com/masai/main/Car.class

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‎Loose_Coupling_1/bin/com/masai/main/Traveller.class

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‎Loose_Coupling_1/bin/com/masai/main/Vehicle.class

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‎Loose_Coupling_1/src/com/masai/main/Traveller.java

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package com.masai.main;
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//INTERFACE TO MAKE OUR CLASS LOOSELY COUPLED
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interface Vehicle{
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void start();
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}
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/* LOOSE COUPLING => BASICALLY IN LOOSE COUPLING
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WE USE INTERFACES OR ABTRACT CLASSES TO
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MAKE OUR CLASSES LOOSELY
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COUPLED SO IN LOOSE COUPLING
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IF WE DO SOME CHANGES IN DEPENCY
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SO WE DON'T HAVE TO WORRY ABOUT DO THE CHANGES IN
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DEPENDENT CLASS BECUASE HERE WE USE
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INTERFACE OR ABSTRACT CLASS TO
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MAKE THE DEPENDECY LOOSELY COUPLED
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DEGREE OF DEPENDENCY IS LOW
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*/
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//DEPENDECY CLASS
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class Bike implements Vehicle{
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@Override
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public void start() {
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System.out.println("trip start by bike");
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}
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}
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//DEPENDECY CLASS
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class Car implements Vehicle{
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@Override
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public void start() {
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System.out.println("trip start by car");
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}
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}
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//DEPENDENT CLASS
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/* SO HERE OUR TRAVELLER WANTS TO ANY
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VEHICLE SO THEY SIMPLY PASS
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THE OBJECT OF THAT VEHICLE IN
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THE V VERIABLE */
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public class Traveller {
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// REFERENCE OF INTERFACE
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private Vehicle v;
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public void setV(Vehicle v) {
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this.v = v;
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}
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public static void main(String[] args) {
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Traveller t = new Traveller();
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t.setV(new Bike());
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t.v.start();
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}
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}
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‎Loose_Coupling_2/.classpath

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
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<attributes>
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<attribute name="module" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>

‎Loose_Coupling_2/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Loose_Coupling_2</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>

‎Loose_Coupling_2/.settings/org.eclipse.core.resources.prefs

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eclipse.preferences.version=1
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encoding/<project>=UTF-8

‎Loose_Coupling_2/.settings/org.eclipse.jdt.core.prefs

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=17
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
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org.eclipse.jdt.core.compiler.release=enabled
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org.eclipse.jdt.core.compiler.source=17

‎Loose_Coupling_2/bin/com/masai/main/Main.class

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‎Loose_Coupling_2/bin/com/masai/main/Pen.class

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‎Loose_Coupling_2/bin/com/masai/main/Pencil.class

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‎Loose_Coupling_2/bin/com/masai/main/Student.class

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‎Loose_Coupling_2/bin/com/masai/main/WritingInstrument.class

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‎Loose_Coupling_2/src/com/masai/main/Main.java

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package com.masai.main;
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//INTERFACE FOR MAKI THE CLASSES LOOSELY COUPLED
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interface WritingInstrument{
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void work();
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}
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//DEPENDECY CLASS
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class Pen implements WritingInstrument{
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@Override
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public void work() {
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System.out.println("student using pen");
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}
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}
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//DEPENDECY CLASS
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class Pencil implements WritingInstrument{
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@Override
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public void work() {
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System.out.println("student using pencil");
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}
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}
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//DEPENDNt CLASS
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/* NOW OUR STUDENT WANTS TO USE PEN , PENCIL
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OR OBJECT HE CAN EASILY PASS THE OBJECT
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INTO SET METHOD BECUASE HERE OUR STUDENT CLASS
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IS LOOSELY COUPLED */
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class Student {
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// USING THE REFERENCE OF INTERFACE
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WritingInstrument wi;
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public void setWi(WritingInstrument wi) {
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this.wi = wi;
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}
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public void doWork() {
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wi.work();
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}
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}
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public class Main {
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public static void main(String[] args) {
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Student st = new Student();
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st.setWi(new Pen());
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st.doWork();
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}
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}

‎Tight_Coupling_1/.classpath

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
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<attributes>
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<attribute name="module" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>

‎Tight_Coupling_1/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Tight_Coupling_1</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>

‎Tight_Coupling_1/.settings/org.eclipse.core.resources.prefs

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eclipse.preferences.version=1
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encoding/<project>=UTF-8

‎Tight_Coupling_1/.settings/org.eclipse.jdt.core.prefs

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=17
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
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org.eclipse.jdt.core.compiler.release=enabled
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org.eclipse.jdt.core.compiler.source=17

‎Tight_Coupling_1/bin/com/masai/main/Bike.class

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‎Tight_Coupling_1/bin/com/masai/main/Car.class

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‎Tight_Coupling_1/bin/com/masai/main/Traveller.class

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‎Tight_Coupling_1/src/com/masai/main/Traveller.java

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package com.masai.main;
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//DEPENDENCY CLASS
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class Car {
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public void start() {
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System.out.println("start trip by car");
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}
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}
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//DEPENDENCY CLASS
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class Bike {
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public void start() {
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System.out.println("start trip by bike");
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}
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}
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/* TIGHT COUPLING => IF WE HAVE DEPENDENCY OF A CLASS
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IN OTHER CLASS(OBJECT OF ANOTHER CLASS CONTAIN)
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IF WE DO SOME CHANGES IN OUR DEPENDENCY AND AFTER
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SAME WE HAVE TO SOME CHANGES IN OUR DEPENDENT CLASS
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SO IT IS CALLED AS TIGHT COUPLING THAT IS NOT GOOD PRACTICE
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DEGREE OB DEPENDENCY IS HIGH
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*/
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//DEPENDENT CLASS
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/* NOW OUR TRAVELLER WANTS TO START THIER TRIP BY BIKE , OR ANY OTHER VEHICLE (ANOTHER CLASS)
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SO WE HAVE DO SOME CHANGES IN TRAVELLER CLASS ALSO
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INSTEAD OF CRETING CAR OBJECT WE HAVE TO CRAETE
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BIKE OBJECT WHICH IS NOT GOOD PRACTICE
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SO HERE OUR CLASSES IS TIGHT COUPLED WITH EACH OTHER
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*/
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public class Traveller {
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static Bike bike = new Bike();
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public static void main(String[] args) {
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bike.start();
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}
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}

‎Tight_Coupling_2/.classpath

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
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<attributes>
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<attribute name="module" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>

‎Tight_Coupling_2/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Tight_Coupling_2</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>

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