BAEL-6669, Passing Class Name as Parameter in Java

2023-09-06 03:02:37 -07:00
parent 6477f9694a
commit b066bce2b6
17 changed files with 305 additions and 0 deletions
@@ -0,0 +1,21 @@
+package com.baeldung.reflection.createobject.basic;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class BronzeJobCard {
+    private Object jobType;
+    public void setJobType(String jobType) throws ClassNotFoundException,
+            NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
+        Class jobTypeClass = Class.forName(jobType);
+        this.jobType = jobTypeClass.getDeclaredConstructor().newInstance();
+    }
+    public String startJob() {
+        if(this.jobType instanceof RepairJob) {
+            return "Start Bronze " + ((RepairJob) this.jobType).getJobType();
+        }
+        if(this.jobType instanceof MaintenanceJob) {
+            return "Start Bronze " + ((MaintenanceJob) this.jobType).getJobType();
+        }
+        return "Bronze Job Failed";
+    }
+}
@@ -0,0 +1,17 @@
+package com.baeldung.reflection.createobject.basic;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class GoldJobCard<T> {
+    private T jobType;
+
+    public void setJobType(Class<T> jobTypeClass) throws
+            NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
+        this.jobType = jobTypeClass.getDeclaredConstructor().newInstance();
+    }
+
+    public String startJob() throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+        return "Start Gold " + this.jobType.getClass().getMethod("getJobType")
+                .invoke(this.jobType).toString();
+    }
+}
@@ -0,0 +1,7 @@
+package com.baeldung.reflection.createobject.basic;
+
+public class MaintenanceJob {
+    public String getJobType() {
+        return "Maintenance Job";
+    }
+}
@@ -0,0 +1,7 @@
+package com.baeldung.reflection.createobject.basic;
+
+public class PaintJob {
+    public String getJobType() {
+        return "Paint Job";
+    }
+}
@@ -0,0 +1,7 @@
+package com.baeldung.reflection.createobject.basic;
+
+public class RepairJob {
+    public String getJobType() {
+        return "Repair Job";
+    }
+}
@@ -0,0 +1,22 @@
+package com.baeldung.reflection.createobject.basic;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class SilverJobCard {
+    private Object jobType;
+
+    public void setJobType(Class jobTypeClass) throws
+            NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
+        this.jobType = jobTypeClass.getDeclaredConstructor().newInstance();
+    }
+
+    public String startJob() {
+        if (this.jobType instanceof RepairJob) {
+            return "Start Silver " + ((RepairJob) this.jobType).getJobType();
+        }
+        if (this.jobType instanceof MaintenanceJob) {
+            return "Start Silver " + ((MaintenanceJob) this.jobType).getJobType();
+        }
+        return "Silver Job Failed";
+    }
+}
@@ -0,0 +1,5 @@
+package com.baeldung.reflection.createobject.special;
+
+public interface Job {
+    String getJobType();
+}
@@ -0,0 +1,7 @@
+package com.baeldung.reflection.createobject.special;
+
+public class MaintenanceJob implements Job {
+    public String getJobType() {
+        return "Maintenance Job";
+    }
+}
@@ -0,0 +1,8 @@
+package com.baeldung.reflection.createobject.special;
+
+public class PaintJob implements Job {
+    @Override
+    public String getJobType() {
+        return "Paint Job";
+    }
+}
@@ -0,0 +1,16 @@
+package com.baeldung.reflection.createobject.special;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class PlatinumJobCard<T extends Job> {
+    private T jobType;
+
+    public void setJobType(Class<T> jobTypeClass) throws
+            NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
+        this.jobType = jobTypeClass.getDeclaredConstructor().newInstance();
+    }
+
+    public String startJob() {
+        return "Start Platinum " + this.jobType.getJobType();
+    }
+}
@@ -0,0 +1,7 @@
+package com.baeldung.reflection.createobject.special;
+
+public class RepairJob implements Job {
+    public String getJobType() {
+        return "Repair Job";
+    }
+}
@@ -0,0 +1,20 @@
+@startuml
+'https://plantuml.com/class-diagram
+
+class BronzeJobCard {
+ -Object jobType
+ +setJobType(String jobType)
+ +startJob()
+}
+
+class MaintenanceJob {
+ +getJobType()
+}
+class RepairJob {
+ +getJobType()
+}
+BronzeJobCard -left-> MaintenanceJob:creates
+BronzeJobCard -right-> RepairJob:creates
+
+
+@enduml
@@ -0,0 +1,20 @@
+@startuml
+'https://plantuml.com/class-diagram
+
+class GoldJobCard<T> {
+ -T jobType
+ +setJobType(Class<T> jobTypeClass)
+ +startJob()
+}
+
+class MaintenanceJob {
+ +getJobType()
+}
+class RepairJob {
+ +getJobType()
+}
+GoldJobCard -left-> MaintenanceJob:creates
+GoldJobCard -right-> RepairJob:creates
+
+
+@enduml
@@ -0,0 +1,25 @@
+@startuml
+'https://plantuml.com/class-diagram
+interface Job {
+getJobType
+}
+class PlatinumJobCard <T extends Job> {
+ +setJobType(Class<T> jobTypeClass)
+ +startJob()
+}
+
+class MaintenanceJob implements Job {
+ +getJobType()
+}
+class RepairJob  implements Job {
+ +getJobType()
+}
+class PaintJob  implements Job {
+ +getJobType()
+}
+PlatinumJobCard -up-> MaintenanceJob:creates
+PlatinumJobCard -up-> RepairJob:creates
+PlatinumJobCard -up-> PaintJob:creates
+
+
+@enduml
@@ -0,0 +1,20 @@
+@startuml
+'https://plantuml.com/class-diagram
+
+class SilverJobCard {
+ -Object jobType
+ +setJobType(Class jobTypeClass);
+ +startJob();
+}
+
+class MaintenanceJob {
+ +getJobType();
+}
+class RepairJob {
+ +getJobType();
+}
+SilverJobCard -left-> MaintenanceJob:creates
+SilverJobCard -right-> RepairJob:creates
+
+
+@enduml