Java
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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 …… -
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…… -
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 …… -
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 – 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 – 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 – 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) { …… -
The keylistener event is obviously not triggered in the Java applet
I've just started learning to program applets and Java GUIs. I'm trying to make a simple game At present, I have main …… -
Java – last inserted value in DB
There is already an answer to this question: > how to get a value from the last inserted row? 14 When I insert a ro…… -
Embedded – how to debug unexpected resets in STM32 devices?
I'm doing some development in C using stm32f107 chip, and sometimes when I call a specific function, the device starts…… -
Java – how to return specific types when implementing a common interface
I have an interface that will be implemented by several different classes, each using different types and return types…… -
How to map lambda expressions in Java
I come from Python and try to understand how lambda expressions work in Java In Python, you can do the following: opdi…… -
Warning: jsf1074: a managed bean named “bean” has been registered
I'm using mojarra JSF 2.2 The bean we define is based on anonation, for example @ManagedBean(name = "codeBean") @ViewS…… -
How to automatically improve debugging in symfony2
I tried to debug using symfony2 before, and dealing with cache is a great pain Solution I'm on the app_ This code (bas…… -
Implementation of counting using group in Java 8
I am looking for the implementation of group by, and then filter it according to the count in the lambda expression se…… -
Java hash map thread visibility
I fully loaded a Java HashMap during initialization, but after initializing multiple threads, the HashMap will read th…… -
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…… -
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…… -
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 – 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…… -
When a java program suddenly exits, can you perform some operations?
If the program exits suddenly or there are any exceptions, I need to log For example, when someone presses Ctrl C whil…… -
Java – mongodb is obviously too big for a 16MB hat
I have a mongodb series Simply put, it has two columns: user and URL It has 39274590 lines The key to this table is {u…… -
Java – Android: a simple GridView that displays text in the grid
I followed this example in the Android tutorial on GridView, but I want to use textview to simply display some text in…… -
Java – selenium does not detect the second window in ie
My application opens a new button - click window where I need to do something However, selenium webdriver's response t…… -
Handling Unicode proxy values in Java strings
Consider the following codes: byte aBytes[] = { (byte)0xff,0x01,(byte)0xd9,(byte)0x65,(byte)0x03,(byte)0x04,(byte)0x05…… -
How to use Java driver to execute full-text search commands in mongodb?
Mongo and Java masters Our team decided to use the full-text search API recently introduced in mongodb However, we fin…… -
Create variable names using loops in Java?
The first poster, long time readers, so be gentle to me:) Refer to the following code, which is used to generate time …… -
Java – Lucene index problem with “–” character
I came across a Lucene index that indexes words with "–" characters It applies to some words that contain "–" but not …… -
Java – how to comment that all lines contain some text in eclipse
I'm using eclipse to cook Java Now, when I want to comment on all lines containing specific text / variables, I have e…… -
Java – spring MVC passes a list of values from the JSP page to the controller
If I have HTML in < form >, like this: <input type="text" value="someValue1" name="myValues"/> <inp…… -
How do I turn the monitor on and off in a Java application?
How do I turn the monitor on and off in a Java application? If you want to know why, this is a self-service terminal s…… -
Java – is there any way to create a basic array without initialization?
As we know, Java always initializes arrays at creation time That is, new int [1000000] always returns an array with al……