包含标签：Java 的文章
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Focus debugging in Java
Question: I'm trying to debug some focus related issues in my Java Swing application. Sometimes, some components seem …… -
Java: can integer = null be set?
If this parameter exists in the database, I have a function that returns the ID number If not, null Is this begging fo…… -
How do I unit test the javanica @ hystrixcommand annotation method?
I am using javanica and commenting on my hystrix command method, as follows: @HystrixCommand(groupKey="MY_GROUP",comma…… -
Delay multiple TCP connections from Java to the same machine
(see this question in serverfault) I have a java client using socket to open concurrent connections to the same machin…… -
Using Java IO seeking bytearrayinputstream
How to find (change location) bytearrayinputstream (Java. IO)? This is obvious, but I can't seem to find a way anywher…… -
Java – GWT and enumeration issues
I have an enumeration in the client of the GWT application. When I try to run it, I receive an exception related to se…… -
Java – hashcode, implementation and relationship with HashMap
So I asked another related question here: Java string hash function with avalanche effect, but now I have a different …… -
UTF-8 encodes Java strings into properties
I have a single UTF - 8 encoded string, which is a series of key - value pairs that need to be loaded into the propert…… -
How do I create a key pair in Java based on a password?
I want to allow Alice to create a public / private key pair so that Bob can send her confidential messages However, I …… -
Java – unit testing, static and factory
I'm implementing a model in Java. It needs to iterate a set and go through some identification stages. It involves loo…… -
Java – @ size, @ length and @ column (length = value)
What is the difference between the validation check of the following three fields? @Entity public class MyEntity { …… -
Java – how to map a set of string objects using JPA annotations?
@Entity @Entity public class TestClass implements Serializable{ private Integer id; private Set<String> …… -
Java – I can kill or complete () an activity in a thread other than a thread?
I wonder if it is possible to create a thread and kill / complete the activity, if so, how can it not work in the doin…… -
What Java data type corresponds to Oracle SQL data type numeric?
Oracle jdbc driver assigns Java data type to Oracle SQL data type numeric? Does this vary with the size of the numeric…… -
Java – find out which classes use a given API
In my java project, I want to find out which classes use the given API from the program Is there any way to do this? C…… -
Java – resource leak: ‘in’ has never been closed, even though it is closed
I know there are several similar problems here, but most people have forgotten to put a close () instruction in their …… -
The Java implementation of producer consumer throws Java lang.IllegalMonitorStateException
import java.util.LinkedList; import java.util.LinkedList; import java.util.Queue; class Producer extends PubSub imple…… -
Java – why do anonymous classes catch “this” even if they don’t need it?
In view of this Code: class Foo {} public class Test { public Foo makeFoo(String p,String q) { …… -
Java – is it acceptable to use the hamcrest matcher in non test code
I tried to find a clear answer to using hamcrest matchers in non - Test code I have done some research and have some c…… -
Java – what is the reason for the failure: “jarsigner: failed to try to rename {file} to {file}. Org” sign up with ants?
I received an error: When trying to sign a set of cans with ants in eclipse Ant build works well in this project and h…… -
Multithreading – prevents / removes threads from publishing messages to the main UI thread
My problem is that if a thread quickly publishes messages to the main UI thread, and if I update the UI at that time, …… -
Java n-dimensional array
I need to be able to have an n-dimensional field, where n is the input based on the constructor But I'm not even sure …… -
Java – spring MVC: Form: RadioButton of Boolean attribute
I just want to know how to use Boolean values in spring MVC forms I try to use this Code: My jsp: <form:radiobutton…… -
Concurrency – can a single process run in multiple cores?
Can a single process run different threads on different cores? (I think they can) @ h_ 301_ 3@ In this case, different…… -
Use the latest JRE instead of the old java version. Can I guarantee that it will work?
Suppose I have a java project encoded in Java 1.5. I use a newer version of Java, but set the target to 1.5 If the cod…… -
Java – find the largest connected component in the adj matrix graph?
I try to find a way to find the largest connected component in adj matrix graph For example: 0000000110 0001100000 000…… -
Parallel for loop
I want to use the go routine to parallelize the for loop I tried to use the channel, but it didn't work My main proble…… -
Java – multiple object types in an ArrayList
I have an abstract class named user, which can be created as student type or teacher type I have created an ArrayList …… -
Java – do you know what this error means in SVN?
Send example java I try to restore my changes and then even add only one additional character, and I'll see this error…… -
How to create mongodb objectid in Java
How to add an array to a mongodb document using Java? after { "_id" : ObjectId("5399aba6e4b0ae375bfdca88"),"addressDe…… -
Java – how to work comfortably in large (Android) projects?
I created an app for Android some time ago and uploaded it to Google play I'm happy because users like my application …… -
Java – making a flash screen with an eclipse progress bar
My main class loads the configuration from the file and then displays a framework I want to use a progress bar like ec……