gaspersic/java-design-patterns
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Example improvements.

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This commit is contained in:
Ilkka Seppala 2015-04-29 21:58:17 +03:00
parent 5562795a5f
commit b3bf4379a4
2 changed files with 35 additions and 6 deletions
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21
tolerant-reader/src/main/java/com/iluwatar/App.java
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@ -2,17 +2,30 @@ package com.iluwatar;
import java.io.IOException; import java.io.IOException;
/**
*
*
*
*/
public class App { public class App {
public static void main( String[] args ) throws IOException, ClassNotFoundException { public static void main( String[] args ) throws IOException, ClassNotFoundException {
// Write V1
RainbowFish fishV1 = new RainbowFish("Zed", 10, 11, 12); RainbowFish fishV1 = new RainbowFish("Zed", 10, 11, 12);
RainbowFishSerializer.write(fishV1, "fish1.out"); System.out.println(String.format("fishV1 name=%s age=%d length=%d weight=%d", fishV1.getName(),
RainbowFish deserializedFishV1 = RainbowFishSerializer.read("fish1.out"); fishV1.getAge(), fishV1.getLengthMeters(), fishV1.getWeightTons()));
RainbowFishSerializer.writeV1(fishV1, "fish1.out");
// Read V1
RainbowFish deserializedFishV1 = RainbowFishSerializer.readV1("fish1.out");
System.out.println(String.format("deserializedFishV1 name=%s age=%d length=%d weight=%d", deserializedFishV1.getName(), System.out.println(String.format("deserializedFishV1 name=%s age=%d length=%d weight=%d", deserializedFishV1.getName(),
deserializedFishV1.getAge(), deserializedFishV1.getLengthMeters(), deserializedFishV1.getWeightTons())); deserializedFishV1.getAge(), deserializedFishV1.getLengthMeters(), deserializedFishV1.getWeightTons()));
// Write V2
RainbowFishV2 fishV2 = new RainbowFishV2("Scar", 5, 12, 15, true, true, true); RainbowFishV2 fishV2 = new RainbowFishV2("Scar", 5, 12, 15, true, true, true);
RainbowFishSerializer.write(fishV2, "fish2.out"); System.out.println(String.format("fishV2 name=%s age=%d length=%d weight=%d sleeping=%b hungry=%b angry=%b", fishV2.getName(),
RainbowFish deserializedFishV2 = RainbowFishSerializer.read("fish2.out"); fishV2.getAge(), fishV2.getLengthMeters(), fishV2.getWeightTons(), fishV2.getHungry(), fishV2.getAngry(), fishV2.getSleeping()));
RainbowFishSerializer.writeV2(fishV2, "fish2.out");
// Read V2 with V1 method
RainbowFish deserializedFishV2 = RainbowFishSerializer.readV1("fish2.out");
System.out.println(String.format("deserializedFishV2 name=%s age=%d length=%d weight=%d", deserializedFishV2.getName(), System.out.println(String.format("deserializedFishV2 name=%s age=%d length=%d weight=%d", deserializedFishV2.getName(),
deserializedFishV2.getAge(), deserializedFishV2.getLengthMeters(), deserializedFishV2.getWeightTons())); deserializedFishV2.getAge(), deserializedFishV2.getLengthMeters(), deserializedFishV2.getWeightTons()));
} }

20
tolerant-reader/src/main/java/com/iluwatar/RainbowFishSerializer.java
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@ -11,7 +11,7 @@ import java.util.Map;
public class RainbowFishSerializer { public class RainbowFishSerializer {
public static void write(RainbowFish rainbowFish, String filename) throws IOException { public static void writeV1(RainbowFish rainbowFish, String filename) throws IOException {
Map<String, String> map = new HashMap<>(); Map<String, String> map = new HashMap<>();
map.put("name", rainbowFish.getName()); map.put("name", rainbowFish.getName());
map.put("age", String.format("%d", rainbowFish.getAge())); map.put("age", String.format("%d", rainbowFish.getAge()));
@ -23,8 +23,24 @@ public class RainbowFishSerializer {
objOut.close(); objOut.close();
fileOut.close(); fileOut.close();
} }
public static void writeV2(RainbowFishV2 rainbowFish, String filename) throws IOException {
Map<String, String> map = new HashMap<>();
map.put("name", rainbowFish.getName());
map.put("age", String.format("%d", rainbowFish.getAge()));
map.put("lengthMeters", String.format("%d", rainbowFish.getLengthMeters()));
map.put("weightTons", String.format("%d", rainbowFish.getWeightTons()));
map.put("angry", Boolean.toString(rainbowFish.getAngry()));
map.put("hungry", Boolean.toString(rainbowFish.getHungry()));
map.put("sleeping", Boolean.toString(rainbowFish.getSleeping()));
FileOutputStream fileOut = new FileOutputStream(filename);
ObjectOutputStream objOut = new ObjectOutputStream(fileOut);
objOut.writeObject(map);
objOut.close();
fileOut.close();
}
public static RainbowFish read(String filename) throws IOException, ClassNotFoundException { public static RainbowFish readV1(String filename) throws IOException, ClassNotFoundException {
Map<String, String> map = null; Map<String, String> map = null;
FileInputStream fileIn = new FileInputStream(filename); FileInputStream fileIn = new FileInputStream(filename);
ObjectInputStream objIn = new ObjectInputStream(fileIn); ObjectInputStream objIn = new ObjectInputStream(fileIn);