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java – android spinner NullPointerException

Hey guys, I'm in trouble with a spinner that throws nullpointerexpression. Am I sure I missed something stupid? Thanks……

Java

2020-09-04

Java – get all classes referenced by the class

Suppose I have a Java. Net at runtime Lang. class instance At run time, check which classes C uses anyway? For example……

Java

2020-09-04

Java – a general way to optimize program speed

In terms of speed, what general methods can optimize programs in Java I use DOM parser to parse the XML file, then sto……

Java

2020-09-04

Oledate Java implementation

I need a good oledate Java implementation, and this one doesn't seem to work Are there any known good open source impl……

Java

2020-09-04

Capture (capture) the mouse cursor in a Java window

I'm looking for a way to capture or capture the mouse after it enters the window, just as the mouse is trapped in the ……

Java

2020-09-04

Java – deploy / redeploy applications to Tomcat’s pitpals without restarting

I have read that Tomcat 5.5 can deploy war to Tomcat server without restart That sounds great, but I think I'm too ske……

Java

2020-09-04

How to synchronize java code

I have the next code: Process p = Runtime.getRuntime().exec(args); I want my program to wait for the runtime getRuntim……

Java

2020-09-04

Java – how do I persist cookies?

I create a cookie in the JSP script, which is located at: www.myproject.com/login/index.jsp If I restart the browser a……

Java

2020-09-04

Are there any third-party jar files available for Java 6 math evaluation?

I want to be in Java 6 Calculate mathematical expressions in, for example, c=a*b+((b/d)-c)/100-(h/2) How to evaluate t……

Java

2020-09-04

Which Java reporting tool will be used for small and medium-sized webapps in 2010

We have a web application that contains some forms and integrates with mobile applications We will generate reports ba……

Java

2020-09-04

Java – how to obtain the dependency of SQL JDBC 4 using eclipse and Maven 2?

I am using eclipse and Maven 2 plug - ins I want to add dependencies for sqljdbc 4. What should I do? Can't seem to fi……

Java

2020-09-04

Java – cannot run jar files on another PC Possible problems with environment variables?

I have built a jar file that performs well on my PC (XP) with eclipse installed It also applies to another PC that als……

Java

2020-09-04

Can java process delete loaded jars?

Hello, I have the following questions: During the unloading process, I loaded a jar (JDBC Driver) URL pDriverJar = jar……

Java

2020-09-04

Java – does the runtime match o (nlogn)?

I wrote a class (greedy strategy). At first, I used the sorting method with O (nlogn) Then I used the binary search tr……

Java

2020-09-04

Java – Apache commons mathematical optimization

Does anyone have any experience with the Apache commmons math optimization package? More specifically, the implementat……

Java

2020-09-04

Extensible, low overhead, high performance Java persistence framework

I look forward to building a website / application The class model has about 100 objects and is not particularly compl……

Java

2020-09-04

Dynamically set the maximum heap size of the java process

I have a java program started by a batch file, and its line is as follows: javaw -Xms64m -Xmx1024m com.acme.MyProgram ……

Java

2020-09-04

Java EE – what is the reason for the “duplicate entry” savefailureexception when deploying ear to WebSphere?

When trying to install ear, the following exception occurs: Caught Exception installing ApplicationName com.ibm.ws.s……

Java

2020-09-04

Java – how to resolve hibernate errors: duplicate columns in entity mappings?

Hi, I have the following models: @Entity class Flight{ private Airport airportFrom; private Airport airportTo; ……

Java

2020-09-04

How do I match “not” with more characters in the Java regular expression pattern?

In Java regular expressions, use [^ x] to match "not" with a char I wonder how to match more characters? I use [^ 789]……

Java

2020-09-04

Java – LDAP: use filters to avoid child CN in Active Directory

I tried to query almost all users in active directory It looks like another question, but their answers don't help me ……

Java

2020-09-04

Java – the persistence object cannot be removed from persistence Persistence unit found in XML

Environment: Windows 7, netbean 6.9 (including GlassFish V3, Java EE 6), MySQL server I have created a table in the My……

Java

2020-09-04

The Java – JSTL FMT library throws a 500 error. Do you need to enable the session?

I am developing a simple servlet / JSP, data - driven website on Google App Engine I have started using the JSTL FMT l……

Java

2020-09-04

Use random numbers to list in Java

I received the following error import java.util.*; import java.io.*; public class ShufflingListAndarray { public st……

Java

2020-09-04

Java – should I create a protected constructor for my singleton class?

According to the design, in singleton mode, the constructor should be marked as private and provide the creation metho……

Java

2020-09-04

Java – BlackBerry Push Notification: do you really need Tomcat / MySQL?

There doesn't seem to be a lot of information about BlackBerry Push technology My only hope is to send notifications t……

Java

2020-09-04

Java – how to get resources in another jar

I have a jar embedded in a package. I need to obtain the resources packaged with it, as shown below: MyBundle -\ src……

Java

2020-09-04

Java – link list Insert integers in order

I have a linked list of integers When I insert a new node, I need to insert it not at the end, but at ord... I.e. 2,4,……

Java

2020-09-04

Java – any website / book / technique for practicing recursion and OO design?

I just want to know if any websites have problems practicing recursion and OO design (given some entities that design ……

Java

2020-09-04

Java – the difference between Max heap and sort stack

I want to know when we can use collections Why do we need a new data structure like Max heap when sort method sorts th……

Java

2020-09-04

Java – should it be in struts All operation classes are listed in XML

Whether it should be in struts List all operation classes in XML? If the action classes are not listed in the struts 2……

Java

2020-09-04

Java: modifying system properties through runtime

I have a running jar file It is selenium RC server I want to be able to change the JVM httpproxy Host / port / etc sys……

Java

2020-09-04

搜索内容

java – android spinner NullPointerException

Java – get all classes referenced by the class

Java – a general way to optimize program speed

Oledate Java implementation

Capture (capture) the mouse cursor in a Java window

Java – deploy / redeploy applications to Tomcat’s pitpals without restarting

How to synchronize java code

Java – how do I persist cookies?

Are there any third-party jar files available for Java 6 math evaluation?

Which Java reporting tool will be used for small and medium-sized webapps in 2010

Java – how to obtain the dependency of SQL JDBC 4 using eclipse and Maven 2?

Java – cannot run jar files on another PC Possible problems with environment variables?

Can java process delete loaded jars?

Java – does the runtime match o (nlogn)?

Java – Apache commons mathematical optimization

Extensible, low overhead, high performance Java persistence framework

Dynamically set the maximum heap size of the java process

Java EE – what is the reason for the “duplicate entry” savefailureexception when deploying ear to WebSphere?

Java – how to resolve hibernate errors: duplicate columns in entity mappings?

How do I match “not” with more characters in the Java regular expression pattern?

Java – LDAP: use filters to avoid child CN in Active Directory

Java – the persistence object cannot be removed from persistence Persistence unit found in XML

The Java – JSTL FMT library throws a 500 error. Do you need to enable the session?

Use random numbers to list in Java

Java – should I create a protected constructor for my singleton class?

Java – BlackBerry Push Notification: do you really need Tomcat / MySQL?

Java – how to get resources in another jar

Java – link list Insert integers in order

Java – any website / book / technique for practicing recursion and OO design?

Java – the difference between Max heap and sort stack

Java – should it be in struts All operation classes are listed in XML

Java: modifying system properties through runtime

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