Recent questions tagged JAVA

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java - How to use Redirect in ModelAndView

I Want to redirect my url to http://localhost:8080/ClickBuy/product/details to http://localhost:8080/ClickBuy ... return type method??? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Garbage collection and Strings

I have some doubts regarding Strings Are they live on Heap or String pool? And if on Heap then they will ... Collection happens only on heap. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why is this URL returning error 400 from Tomcat?

I have a Tomcat server running Java servlets. I'm trying to make a servlet that returns stored files, given ... any invalid characters in it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - SQLSyntaxErrorException when using LIKE with ojdbc7.jar

I have the following statement : PreparedStatement prpStat = conn .prepareStatement("SELECT * FROM natperson WHERE name ... how to solve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Log4j does not recreate files on deletion

I have a web application in Tomcat that uses log4j for logging. If I delete the log files while the web ... without having to restart Tomcat? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How do I enter parameters for an ArrayList in BlueJ?

In BlueJ, if I write a method that takes an array as a parameter, then when I want to test that method ... type in the following dialog box? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Fake a GWT Synchronous RPC call

First of all, I know that doing a synchronous call is "wrong", and know that "is not possible". But, in ... for doing this. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - I want to load all JARs from my libs project folder with Maven

I have a Java project using Maven. In my project I have a folder called libs that contains all the JARs that I ... clear or if I'm mistaken. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Using conditions to dynamically exclude POJO property in Jackson json serialization

I have a requirement to dynamically exclude certain property within a List of a defined POJO. The main POJO ... given towards achieving this. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why does the STAX parser think this is valid XML 1.0 but not 1.1?

In the following code example, I use the STaX parser to parse a piece of XML. If I run the xml10 ... at StaxSucks.main(StaxSucks.java:74) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - The specified JDK Version is "2724.0.0.0.0", while the maximum is "500.0.0.0.0"

While installing the Netbeans IDE latest version, i encountered the error "The specified JDK Version is "2724.0.0.0. ... help me in the same. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What exactly is the use of flush for a printwriter object?

I'm looking for a theoretical analysis. I mean, how does the buffer system works and what advantage does using ... with an example, if possible. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JavaFX 2.2 get node at coordinates (visual tree hit testing)

How can I get a list of (or the first one of) the controls under the mouse/arbitrary coordinates? I know WPF ... to get a node by coordinates. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Convert ArrayList<Object[]> to Object[][]

How, in Java, do I convert an ArrayList of arrays to a two-dimensional array? Example: ArrayList<String[]> ... Object[]) is not defined. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Can Google App Engine Modules share source code just like Maven Modules?

I'm using Google App Engine to create a project consisting of multiple Google Modules. How do I set up my ... among Google App Engine modules? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Deadlocks and Synchronized methods

I've found one of the code on Stack Overflow and I thought it is pretty similar to what I am facing but ... go into a deadlock and workarounds? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Error about sun/misc/BASE64Encoder on Eclipse

when i run my app in mac, and show up this message Errors occurred during the build. Errors running builder 'Android ... .java:496) ... 23 more See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to check ALL elements of a boolean array are true

I have a boolean array whose size depends on the size of a randomly selected string. So I have something like ... set a test condition in that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why is synchronized not working properly?

Here's my code: private int count = 0; public synchronized void increment() { count++; } public void doWork() ... wrong (I'm a newbie)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - how to keep minimized jinternalframe on top

i have four internal frames and 3 buttons in it .When i hit the maximize button,maximizes but it overlaps all ... jdp.add(jInternalFrame1); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JavaFX 2.0 + FXML - strange lookup behaviour

I want to find a VBox node in a scene loaded with FXMLoader thanks to Node#lookup() but I get the ... another manner ? Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - javap in a programmable way

Can we use javap in our own java code in a programmable way? for example, the following code: public class ... Constant Pool using javap's API? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Waiting for multiple callbacks in Android

In Java threads, you could have some number of threads in a list, start them off, and have a main thread ... . Unless I'm missing something? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Cell validation in JTable

I have a JTable that needs cell validation for the cells where the user can input text. When a user enters invalid ... has ideas how to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JAXB Ant Task Error: xjc2 [ERROR] null unknown location

When binding on some valid XML documents using Ant's xjc2 task, I get the following failure message: [xjc2] [ ... have any idea what this means? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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369 views

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java - JFreeChart : how do you put multiple charts into a composite chart

In JFreeChart is there a notion of a composite Chart. I need to layout several charts in a grid like arrangement. ... explains how to do this. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why are interfaces static?

Why can I not have a interface inside of a inner class? Why are they inherently static? Sorry if it's ... two questions are somewhat related. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to use Gson to serialize objects in android?

I want to send 2 objects to Java server from Android client using socket (as I am developing a Remote PC). ... the objects. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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