Type cast of BigInteger to Int

Hi All,
I am working on Email Web Service with Web dynpro.
I am getting an error in type casting BigInterger(which was declared in WSDL) to Int. Java is not recognizing this BigInteger. Can any one help me??
Regards,
Theja

Thejaswi,
Where exactly this happens?
I mean, if you can control this part of code why not to do:
BigInteger bigInt = <...>;
int int = bigInt.intValue();
VS

Similar Messages

Help needed in data type casting

I have a java program which will receive data and its type in the String format. During program execution, the data in the String data has to be converted into the respective data type and assigned to a variable of that data type so that it could be used in the program. Programmer may not know the type of data that the value has to be converted into.
I really got struck up with this. This is a RMI application and one process node is sending the data to another node in the String format and the type of data it should get converted into so that it can be converted into the respective type and used for computation.
Can you understand what I am asking for ....if you can pls help and it is highly appreciated

I dont know whether i ahve expressed it correctly
look at this code
dataPacket sendtoNode = send.senDatatoNode(inputReq);
String recnodnum = sendtoNode.nodeNum;
String recvarnum = sendtoNode.varNum;
String recvartype = sendtoNode.dataType;
String recvalvalue     = sendtoNode.dataVal;
int num;     int type;
double result;
// here in this case the result variable type is double
if (recvartype.equals("int")){
          type = 1;
     result = Integer.parseInt(recvalvalue); will pose problem
     else
     if (recvartype.equals("double")){
          type = 2;
          result = Double.parseDouble(recvalvalue);
     else
     if(recvartype.equals("float")){
          type =3;
          result = Float.parseFloat(recvalvalue); will pose problem
     else
     if(recvartype.equals("Boolean")){
          if ((recvalvalue.equals("true")) || (recvalvalue.equals("TRUE")))
          type = 4;
          result = Boolean.parseBoolean(recvalvalue); will pose problem
     else
     if(recvartype.equals("char")){
          type = 5;
          result = (char)recvalvalue; will pose problem
else
if(recvartype.equals("String")){
     type = 6;
          result = recvalvalue; will pose problem
     else
     if(recvartype.equals("byte")){
          type = 7;
          result = Byte.parseByte(recvalvalue); will pose problem
     else
     if(recvartype.equals("long")){
          type = 8;
          result = Long.parseLong(recvalvalue); will pose problem
     else
     if(recvartype.equals("short")){
          type = 9;
          result = Short.parseShort(recvalvalue); will pose problem
     //forvarval varvalue = new forvarval();
     //varvalue.forvarval(recvartype, recvalvalue);
// this has to be done after sorting the problem of type casting string result = recvalvalue;
//result = value; //<this will surely give me a problem as i m assigning string to double>??
send.host(result);
System.out.println("result received and the result is " +recvalvalue );
now i need to assign the converted string in to a variable and use in the compuation ..thts where the challenge n not in teh conversion process...

Type cast exception

Hi Guys,
I am pretty new at generics and have started reading all material available online. Shown below is the API that I am using
package api;
public interface CS<C extends MyConfig> extends S {
package api;
public interface MyConfig {
package api;
public interface MySession {
     public <C extends MyConfig, T extends ResourceContainer<? extends C>>
     T createContainer(CS<C> aPredefinedConfig);
package api;
public interface NC extends ResourceContainer<NCC> {
package api;
public interface NCC extends MyConfig {
package api;
import java.io.Serializable;
public interface ResourceContainer <T extends MyConfig> extends Serializable {
package api;
public interface S {
     public abstract boolean equals(Object other);
     public abstract int hashCode();
     public abstract String toString();
}And below is my implementation
package impl;
import api.NC;
public class NCImpl implements NC {
package impl;
import api.CS;
import api.MyConfig;
import api.MySession;
import api.ResourceContainer;
public class MySessionImpl implements MySession {
     public <C extends MyConfig, T extends ResourceContainer<? extends C>> T createContainer(
               CS<C> predefinedConfig) {
          NCImpl ncimpl = new NCImpl();
          return ncimpl; //Error Type mismatch: cannot convert from NCImpl to T
}As shown above I get error at line 'return ncimpl' But NCImpl implements the NC which extends ResourceContainer<NCC> so shouldn't it be capable of Type casting to T or I am missing something.
Thanks a lot for your response in advance

continuation of stack trace .................
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
/home/abhayani/workarea/eclipse/workspace/workspace-2.x/GenericsTest/impl/src/main/java/impl/MySessionImpl.java:[16,13] inconvertible types
found : impl.NCImpl
required: T
/home/abhayani/workarea/eclipse/workspace/workspace-2.x/GenericsTest/impl/src/main/java/impl/MySessionImpl.java:[16,13] inconvertible types
found : impl.NCImpl
required: T
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.BuildFailureException: Compilation failure
/home/abhayani/workarea/eclipse/workspace/workspace-2.x/GenericsTest/impl/src/main/java/impl/MySessionImpl.java:[16,13] inconvertible types
found : impl.NCImpl
required: T
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:579)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
/home/abhayani/workarea/eclipse/workspace/workspace-2.x/GenericsTest/impl/src/main/java/impl/MySessionImpl.java:[16,13] inconvertible types
found : impl.NCImpl
required: T
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:114)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
... 16 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5 seconds
[INFO] Finished at: Thu Feb 12 10:39:43 IST 2009
[INFO] Final Memory: 14M/81M
[INFO] ------------------------------------------------------------------------
[abhayani@localhost GenericsTest]$

Type casting

In my program i get a double array from a function call, i want to convert this into an int array, but when i try to type cast it the compiler tells me they are inconvertible types. ie.
int[][] mat = (int[][])mateng.getArray("arraySig");
where the getArray function returns a double array.
Is there any way around this? I have tried to cast the double[][] into an Object[][] array and then back to an int[][], but the compiler wouldnt let me do this either.
Thanks
Alex

One might ask why you're returning a double[][] if you
actually want a int[][]The method returns a double[][] because its a generic method that will also be used to get double[][]s. In those cases it wont do to lose the information that only returning an int[][] would lose.
I wanted to be able to cast the double[][] to an int[][] when i return a specific matrix (ie a ones matrix or a logical matrix).
Alex

Type Casting to a Class

I'm getting an instance of a class through the newInstance() method.I want to access that class members through this newly created object.But to do this, I have to typecast the object by its class name.In my case, the class is a dynamic one(i.e., unknown at the time of creating that object).I get the class name as a string through the getName() method.
HOW CAN I DO THE TYPE CASTING OR IS THERE ANY OTHER METHOD TO SOLVE THIS TYPE OF PROBLEM.
Example :
In this example, i have created an object t2 in the same class.but,in actual case, that object is created in some other program called test2. And test2 doesnt know abt the class(test1) being used.And is being determined at runtime (i.e., dynamical).
class test1
     int i = 10;
     String s;
     public static void main(String a[]) throws InstantiationException, IllegalAccessException, ClassNotFoundException
          test1 t = new test1();
          System.out.println("I = " + t.i);
          System.out.println("Class Name = " + t.getClass().getName());
          t.s = t.getClass().getName();
          Object t2 = t.getClass().newInstance();
          System.out.println("t2 I = " + ((test1)t2).i);
          System.out.println("t2 Class Name = " + t2.getClass().getName());

If you have no idea what members the class could have in compile time, then how can you set them in runtime?
I think you should give another though to your OO design...

Type casting of primitive types

Hi,
I have two pieces of code. The type casting between them is strange.
1st snippet
int i =100;
byte b = i;This gives an precision error. where as this is allowed
final int i =100;
byte b = i;Pls explain as to why is this happening.
Regards,
Anand

The compiler sees that the value is a constant, and that it can't change. And it can therefore validate that the value is within the valid range for a byte.
/Kaj

Type Casting Loaded Swf

I'm having trouble type casting an MXML created swf as in I
can't seem to get it to work.
Here is what I'm doing:
1. Created a LoaderTest.swf that loads AppToLoad.swf
2. Made AppToLoad implement ISomeInterface
3. Once AppToLoad.swf is loaded in LoaderTest.swf, attempt to
type
cast it as ISomeInterface
Code (all code is in the same root package):

package
public interface ISomeInterface
function doSomething():void;


<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" implements="ISomeInterface">
<mx:Script>
<![CDATA[
private var myInterface:ISomeInterface;
public function doSomething():void
trace("doSomething");
]]>
</mx:Script>
</mx:Application>


<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" applicationComplete="start()">
<mx:Script>
<![CDATA[
import mx.managers.SystemManager;
private var ldr:Loader;
private function start():void
ldr = new Loader();
var ldrContext:LoaderContext = new LoaderContext(false,
ApplicationDomain.currentDomain);
ldr.contentLoaderInfo.addEventListener(Event.INIT,
handleLoaded);
ldr.load(new URLRequest("AppToLoad.swf"), ldrContext);
private function handleLoaded(e:Event):void
trace("handleLoaded");
var content:Object = LoaderInfo(e.target).content;
trace("content = "+content);
var typedContent:ISomeInterface = content as ISomeInterface;
trace("typedContent = "+typedContent);
var typedApplication:ISomeInterface = (content as
SystemManager).application as ISomeInterface;
trace("typedApplication = "+typedApplication);
]]>
</mx:Script>
</mx:Application>

Output from running LoaderTest:
[SWF] C:\EDGE\testFolder\bin-debug\LoaderTest.swf - 555,437
bytes
after decompression
[SWF] C:\EDGE\testFolder\bin-debug\AppToLoad.swf - 554,844
bytes after
decompression
handleLoaded
content = [object _AppToLoad_mx_managers_SystemManager]
typedContent = null
typedApplication = null
Any idea what I'm doing wrong?
-JP

I'd be interested in seeing the solution as well, but a quick
workaround is to cast it to the unbind operator.
This is how I've always done it... Maybe you can get it to
work with implements:
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="
http://www.adobe.com/2006/mxml"
>
<mx:Script>
<![CDATA[
import mx.events.FlexEvent;
import mx.managers.SystemManager;
import mx.core.Application;
// * gets rid of type checking so we can leave strict
enabled
[Bindable]public var _appLoaded:*;
private var load_finish_playlist:int = 0;
private var load_finish_name:String = "";
private function
onCurrentApplicationComplete(oEvent:Event):void
_appLoaded = Application(oEvent.target.application);
if(load_finish_playlist > 0) {
setPlaylist(load_finish_playlist);
if(load_finish_name != "") {
setPlayerName(load_finish_name);
private function onCompleteAppLoader(oEvent:Event):void
var smAppLoaded:SystemManager =
SystemManager(oEvent.target.content); //get a ref to the loaded app
//listen for the application.complete event
smAppLoaded.addEventListener(FlexEvent.APPLICATION_COMPLETE,
onCurrentApplicationComplete);
public function setPlaylist(id:int):void {
if(_appLoaded) {
_appLoaded.change_playlist(id);
} else {
load_finish_playlist = id;
public function setPlayerName(name:String):void {
if(_appLoaded) {
_appLoaded.set_name(name);
} else {
load_finish_name = name;
public function stopPlayback():void {
_appLoaded.stop_playback();
public function startPlayback():void {
_appLoaded.start_playback();
]]>
</mx:Script>
 <mx:SWFLoader id="player" x="0" y="0"
source="@Embed('../assets/Player.swf')"
complete="onCompleteAppLoader(event);" trustContent="true"/>
</mx:Canvas>

TYPE CASTING ERROR

HI GURU's
I AM REQUIRED TO GENERATE USER ID AUTOMATICALLY STARTING FROM 0001, 0002, 0003 AND GOES ON INCREMENTING BY 1.
- I MADE USER ID FIELD OPTIONAL.
- THEN I CREATED AN ENTITY ADAPTER TO TRIGGER AT PRE INSERT EVENT, TAKING INITIAL VALUE AS 0000 IN A INTEGER VARIABLE.
- THEN OTHER VARIABLE STORES THE INCREMENTED VALUE OF INITIAL VALUE (INT ADD METHOD).
- THEN I MAPPED THE ADAPTER RETURN VARIABLE WITH THE ENTITY VALUE USER ID OF USER FORM.
WHEN I TRY TO CREATE USER IT SAY ERROR IN TYPE CASTING, OBVIOUSLY IT SHOULD SHOW BECAUSE I AM MAPPING INTEGER RETURN VARIABLE WITH THE STRING TYPE USER ID.
KINDLY SHOW ME THE WAY TO ACHIEVE THIS.
THANKS A LOT.

Have you tried searching this on Google.
See this link:
http://www.javadb.com/convert-an-int-value-to-string
In your Entity Adapter code, write few more lines from the method in the above link.
THEN I CREATED AN ENTITY ADAPTER TO TRIGGER AT PRE INSERT EVENT, TAKING INITIAL VALUE AS 0000 IN A INTEGER VARIABLE.
- THEN OTHER VARIABLE STORES THE INCREMENTED VALUE OF INITIAL VALUE (INT ADD METHOD).
- THEN I MAPPED THE ADAPTER RETURN VARIABLE WITH THE ENTITY VALUE USER ID OF USER FORM.

Type casting for properties accessed in COM Object

I have a com object that I need to access which provides my a
list of addresses in an Array. The object give me a property that
has a count for the number of addresses and then I have a loop that
calls the property which contains the address details to get each
individual address each time passing to the property the INDEX
value on the loop.
This errors out each time.
The error I get is
Error casting an object of type to an incompatible type.
This usually indicates a programming error in Java, although it
could also mean you have tried to use a foreign object in a
different way than it was designed.
It appears the the variable type of the index is not
compatible with the property of the component(which is an int).
IS there some way to type cast the variable used as the index
for CFLOOP to that of an INT?

You can try to use the JavaCast("int", myValue) function. It
works great for Java objects, but I'm not sure how well it will
work for COM. Worth a try, I guess.
In your case it would be something like:
<cfobject type="COM" context="INPROC" action="create"
name="MR" class="DLLNAME">
<cfloop from="1" to="#AddressCount#" index="i">
<cfset VDname = mr.vdsname(JavaCast("int", i))>
<cfset VDaddress = mr.vdsaddress(JavaCast("int", i))#>
<cfset VDXML = mr.VDSXML(JavaCast("int", i))>
</cfloop>

Type casting in JAX-RPC

Hello
I was trying to do a JAX-RPC application, and I had some problems with type casting. My application worked fine with primitive types, vectors of primitive types, and beans with primitive type properties. But it didn't work with vectors of beans, or ArrayList's of beans... It couldn't deserialize the result on client side... Can anyone help?
The Java Web Services Tutorial says that JAX-RPC supports beans and vectors, but I had the impression that this is not a "recursive" support, like "beans with vectors" or "vectors of beans"... Does it make sense?
By the way, I was using a DII client...
Thanks,
Alexandre Murakami

Hello!
Thanks for the reply! I can't put the code of my application here (because it's quite big and it's from work)... But I followed the dii client example from the Web Services Tutorial...
I'm trying to do a kind of a general client... The parameters are the URL of the service, the name of the operation, a list of parameters and the return type class.. And it takes the rest of the service information from the WSDL file... About the return type, I take the QName of the return type from the WSDL:
<message>
<part name="result" type="...">...
then I call the call.setReturnType(QName, Class) method. The return type was an array of a very simple bean, something like:
class Person {
String name;
int age;
public String getName() {...}
public void setName(...) {...}
public int getAge() {...}
public void setAge(...) {...}
I don't know if the information I put here is enough... but anyway, thanks for the reply!
Alexandre Murakami

ClassCastException - While type casting Home object after EJB JNDI Lookup

Sun One Application Server throws a ClassCastException when I try to type cast Home object to it's respective interface type.
Here is the code ---
==============================================
Object obj = PortableRemoteObject.narrow( context.lookup( jndiName ), homeClass);
System.out.println("Remote Object - obj : "+obj);
if (obj != null) {
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         System.out.println("interfaces[ " + count + " ].getName() : " + interfaces[ count ].getName());
}==============================================
The class name is dislpayed as the Stub class name.
While displaying the interfaces, the Home Interface name is displayed.
But later when I try to type cast it into Home Interface type, it throws a ClassCastException.
Can somebody please check this?

Please post the stack trace. Also, take a look at our EJB FAQ to make sure you're doing the
recommended lookup :
https://glassfish.dev.java.net/javaee5/ejb/EJB_FAQ.html

Java type casting interesting query

In java semantics
1) float var1=10.5; // is wrong it should be written as
float var1=(float)10.5; //type casting->double to float
or
float var1=10.5f; //type casting
but
2) byte var2=10; // here int to byte type casting should be there according to previous eg.
But this is correct.
Why the 2nd one is correct???

>
I suspect the reason is, that the compiler can check whether it will fit in the second case.
You can't accidentally type
byte b = 128;Whereas with floating point numbers you could accidentally be losing precision, imagining that you're using doubles, when in fact you are using floats. So the extra cast is needed so you understand you're losing precision.

Type casting arrays

i m reading an array of int from ObjectOutPutStream. can any body tell how do we type cast an object to array ??

karansha:
I'm sure you mean you're trying to read in an int[] from an ObjectInputStream that was written to an ObjectOutputStream since you can't read from an OutputStream. Use something like this:
ObjectInputStream in = <whatever>;
int[] intArray = (int[])in.readObject();adramolek:
Why should you use an Integer[] instead of an int[] for serialization? All arrays of primitives -- boolean[], byte[], double[], float[], int[], long[], short[] -- are serializable as is; there is no need to convert them to arrays of their wrapper types simply to serialize them.
In fact, the output from the following piece of code shows exactly which interfaces are implements by an int[]:
Class cls = int[].class;
Class[] interfaces = cls.getInterfaces();
for (int i = 0; i < interfaces.length; i++) {
System.out.println(interfaces.getName());
The output is:
java.lang.Cloneable
java.io.SerializableThe output is identical for each of boolean[], byte[], double[], float[], int[], long[], and short[], showing that each type is both serializable [i]and cloneable.
Shaun

Type cast with operator +=

Hi,
can somebody explain me, why the java compiler complains about a missing type cast (which is good) in
int a = 0;
double b = 1.3;
a = a + b; // compiler error (missing type cast)but does not complain when using the += shorthand form?
int a = 0;
double b = 1.3;
a += b; // works (!)Thanks,
Michael

Because the compound assignment operator has an implied cast.
A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T)((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only once.

Could not type cast in java embedding

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
org.xml.sax.InputSource in = (org.xml.sax.InputSource) getVariableData("Invoke_1_getRoutingAndFrameJumpers_OutputVariable","getRoutingAndFrameJumpersResponse");
Document doc = db.parse(in);
In the above code I am trying to type cast the variable getRoutingAndFrameJumpersResponse into org.xml.sax.InputSource so that i can parse.
I am not getting any error during compilation
but I am unable to type cast some run time error is coming in the line were I am type casting but I am not able to see the runtime error.
How can I see the runtime error in java embedding, how to type cast a variable into xml so that I can parse it.

Hi Arun,
Could you try using the bpelx:rename extension in an assign activity enables a BPEL process to rename an element through use of XSD type casting.
<bpel:assign>
<bpelx:rename elementTo="QName1"? typeCastTo="QName2"?>
<bpelx:target variable="ncname" part="ncname"? query="xpath_str" />
</bpelx:rename>
</bpel:assign>
Cheers
A

Type cast of BigInteger to Int

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