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Migrating from JSF 1.2 to JSF 2.0
...ces-config.xml to comply JSF 2.0 spec.
<faces-config
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
version="2.0">
...
Clojure 1.2.1/1.3/1.4 'proxy generated in Grails 2.0.0 runtime fails. 1.2.0 is fine
... for ClassCastException: clojure.lang.PersistentArrayMap cannot be cast to java.lang.Class issue
The problem is:
that the compiler injects an incorrect cast to
clojure.lang.PersistentHashMap. In this case it should probably be
cast to a clojure.lang.Associative, the highest common interface...
how to view the contents of a .pem certificate
I am using Java keytool . I have exported a self-signed .pem certificate from my keystore. Is there a command to view the certificate details directly from the .pem file (not of the certificate in the keystore)?
...
Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
...it has reached a breakpoint, but it is not the case, in fact it stops on a Java source file that is ThreadPoolExecutor . There is no stack trace on the console, it just stops. Then if I click on resume it goes on and the app works perfectly. This is what shows in the debugger window:
...
Refresh Fragment at reload
...
This gives following error - java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=2, result=3, data=null} to activity {xont.virtusel.v4.controller/xont.virtusel.v4.controller.sale.InvocieBrandActivity}: java.lang.IllegalStat...
Java: difference between strong/soft/weak/phantom reference
...
Java provides two different types/classes of Reference Objects: strong and weak. Weak Reference Objects can be further divided into soft and phantom.
Strong
Weak
soft
phantom
Let's go point by point.
Strong Reference...
Android Fragment onClick button Method
...s PageListActivity extends ButtonHandlingActivity
ButtonHandlingActivity.java:
public class ButtonHandlingActivity extends Activity {
public void onButtonSomething(View v) {
OnClickFragments.invokeFragmentButtonHandlerNoExc(v);
//or, if you want to handle exceptions:
// try {
//...
Is an array an object in java
In java we can declare an array like
11 Answers
11
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Does Java casting introduce overhead? Why?
... casting is not feasible, JVM must throw a ClassCastException.
Taken from JavaWorld: The cost of casting
Casting is used to convert between
types -- between reference types in
particular, for the type of casting
operation in which we're interested
here.
Upcast operations (also cal...
Set Django IntegerField by choices=… name
...n self.value
class Language(ChoiceEnum):
Python = 1
Ruby = 2
Java = 3
PHP = 4
Cpp = 5
# Uh oh
Language.Cpp._name_ = 'C++'
This is pretty much all. You can inherit the ChoiceEnum to create your own definitions and use them in a model definition like:
from django.db import mo...