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POHashtable update in WebService java
 

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  1. POHashtable update in WebService java
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    <p>I developed a simple distrusted system in Java RMI, now I have to change it to Web Services. I have a problem with my data structure:</p> <p><code>Hashtable&lt;String, ArrayList&lt;Records&gt;&gt; recordsTable;</code> </p> <p><strong>it does not serialize/update my objects correctly.</strong></p> <p>I'm clueless how to change my data structure to overcome such problem? </p> <p>[Edited]</p> <p>For simplicity, say I have this data structure: </p> <p><code>Hashtable&lt;String, Integer&gt; store = new Hashtable&lt;String, Integer&gt;();</code></p> <p>I have a buy() and display() service that is published. Initially I have 100 Apples in store, so when I buy() 10 apples it will print a result of 90 apples. <strong>BUT</strong> when I invoke display later it will print 100 apples.</p> <p>So there is a serialization problem I have no idea how to fix that.</p> <pre><code>public class StoreServer{ Hashtable&lt;String, Integer&gt; store= new Hashtable&lt;String, Integer&gt;(); public StoreServer() { store.put("Coffee", 20); store.put("Apple", 100); store.put("Banana", 50); display(); } public String buy(String item, int quantity) { if(store.containsKey(item)) { int oldQuantity = store.get(item); int newQuantity; if(oldQuantity-quantity&gt;=0) { newQuantity= oldQuantity -quantity; store.put(item, newQuantity); return quantity+" "+item+" were successfully purchased!\n" + ("1. Coffee: "+store.get("Coffee")+"\n")+ ("2. Apples: "+store.get("Apple")+"\n")+ ("3. Bananas: "+store.get("Banana")+"\n")+ ("---------------------------\n"); } else { return "error with your purchase"; } } else { return "error with your purchase"; } } public void display() { System.out.println("------Store Inventory-----"); System.out.println("1. Coffee: "+store.get("Coffee")); System.out.println("2. Apples: "+store.get("Apple")); System.out.println("3. Bananas: "+store.get("Banana")); System.out.println("---------------------------"); }} </code></pre>
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    1. USnewbieLinuxCpp
    1. USnewbieLinuxCpp
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      1. VTUpMod
    1. COShow us teh codez
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      1. USSean Patrick Floyd
    2. COPlease post some code that reproduces the problem. Do `Records` implement the `java.io.Serializable` interface?
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      1. USBizmarck
    3. CO@SeanPatrickFloyd I added a simple code of my problem
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      1. USnewbieLinuxCpp
 

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