iSharkFly-Docs
/
java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

BAEL-3091: The Prototype Pattern in Java - Changes based on comments

This commit is contained in:
Vivek Balasubramaniam 2019-11-09 18:41:22 +05:30
parent d3d5b060e7
commit aafe3d90df
5 changed files with 68 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
patterns/design-patterns-creational/src/main/java/com/baeldung/prototype/PineTree.java Normal file
View File

@ -0,0 +1,21 @@
package com.baeldung.prototype;
public class PineTree extends Tree {
private String type;
public PineTree(double mass, double height) {
super(mass, height);
this.type = "Pine";
}
public String getType() {
return type;
}
@Override
public Tree copy() {
return new PineTree(this.getMass(), this.getHeight());
}
}

21
patterns/design-patterns-creational/src/main/java/com/baeldung/prototype/PlasticTree.java Normal file
View File

@ -0,0 +1,21 @@
package com.baeldung.prototype;
public class PlasticTree extends Tree {
private String name;
public PlasticTree(double mass, double height) {
super(mass, height);
this.name = "PlasticTree";
}
public String getName() {
return name;
}
@Override
public Tree copy() {
return new PlasticTree(this.getMass(), this.getHeight());
}
}

14
patterns/design-patterns-creational/src/main/java/com/baeldung/prototype/Tree.java
View File

@ -1,6 +1,6 @@
package com.baeldung.prototype;
public class Tree implements TreeCloneable {
public abstract class Tree {
private double mass;
private double height;
@ -40,15 +40,5 @@ public class Tree implements TreeCloneable {
return "Tree [mass=" + mass + ", height=" + height + ", position=" + position + "]";
}
@Override
public TreeCloneable createA_Clone() {
Tree tree = null;
try {
tree = (Tree) super.clone();
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
return tree;
}
public abstract Tree copy();
}

6
patterns/design-patterns-creational/src/main/java/com/baeldung/prototype/TreeCloneable.java
View File

@ -1,6 +0,0 @@
package com.baeldung.prototype;
public interface TreeCloneable extends Cloneable {
TreeCloneable createA_Clone();
}

31
patterns/design-patterns-creational/src/test/java/com/baeldung/prototype/TreePrototypeUnitTest.java
View File

@ -7,18 +7,35 @@ import org.junit.jupiter.api.Test;
public class TreePrototypeUnitTest {
@Test
public void givenATreePrototypeWhenClonedThenCreateA_Clone() {
public void givenAPlasticTreePrototypeWhenClonedThenCreateA_Clone() {
double mass = 10.0;
double height = 3.7;
Position position = new Position(3, 7);
Position otherPosition = new Position(4, 8);
Tree tree = new Tree(mass, height);
tree.setPosition(position);
Tree anotherTree = (Tree) tree.createA_Clone();
anotherTree.setPosition(otherPosition);
PlasticTree plasticTree = new PlasticTree(mass, height);
plasticTree.setPosition(position);
PlasticTree anotherPlasticTree = (PlasticTree) plasticTree.copy();
anotherPlasticTree.setPosition(otherPosition);
assertEquals(position, tree.getPosition());
assertEquals(otherPosition, anotherTree.getPosition());
assertEquals(position, plasticTree.getPosition());
assertEquals(otherPosition, anotherPlasticTree.getPosition());
}
@Test
public void givenAPineTreePrototypeWhenClonedThenCreateA_Clone() {
double mass = 10.0;
double height = 3.7;
Position position = new Position(3, 7);
Position otherPosition = new Position(4, 8);
PineTree pineTree = new PineTree(mass, height);
pineTree.setPosition(position);
PineTree anotherPineTree = (PineTree) pineTree.copy();
anotherPineTree.setPosition(otherPosition);
assertEquals(position, pineTree.getPosition());
assertEquals(otherPosition, anotherPineTree.getPosition());
}
}