包含标签：Java 的文章
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Java – programmatically lock the direction in Android
I have the following code Java public void lockScreenOrientation() { setRequestedOrientation(ActivityInfo.SCREEN_O…… -
Java – use Jackson to deserialize arrays
I have a json-rpc client like this, I can't deserialize it {"value":"xxxx","type":"xxxx"} Objects I want to deserializ…… -
Java – how to set the location of jooptionpane
I'm creating this joptionpane JOptionPane.showMessageDialog(this,"File was saved","Save",JOptionPane.INFORMATION_MESSA…… -
Java – how to run applications from war?
I have a large war file that contains many classes with main methods How can I point out the main specific classes tha…… -
Java – how to simulate a null safe operator with a default return value?
I'm sorry for the title, but I can't find a good way to describe the problem in one sentence In short, I have a lot of…… -
Is Java’s RNG (using seed) platform independent?
Apologize in advance for the (seemingly obvious) question I didn't find the answer online, so I think I would ask: Uti…… -
Querying interfaces in Java
Say I have two interfaces a and B: public interface A { public int data(); } public interface B { public char dat…… -
Java – how to reuse fieldlength in form, validation and DDL?
I am developing a spring application that contains a large number of input forms I want to reuse field lengths in UI f…… -
How do I merge a map list into a map?
Can you help me solve Java streams? As you can see from the title, I need to merge list < map < string, map <…… -
What is a Java backreference?
Especially in the context of the readunshared () method of objectinputstream, I came across the word here reference re…… -
Java – orientdb encountered problems using Unicode, Turkish and enumeration
I'm using a lib with enumeration types, which are similar to consts; Type.SHORT Type.LONG Type.FLOAT Type.STRING When …… -
Java – performance advantages of static empty array instances
The usual approach is to extract the return value of an empty array of constants as static constants Like here: public…… -
Java generics: get class >?
I'm having trouble using generics The following examples are given: class A<T> { public A(Class<T> myTyp…… -
Sshd java example
Anyone can give me some sample code, use sshd to access the server and execute some commands from a Java application I…… -
How do you implement tuples in Java for learning algorithms?
I'm learning the algorithm by myself. If my title is incorrect, I'm sorry! I don't understand how to implement it in J…… -
When inserting in ArrayList, Java util. ConcurrentModificationException
See the English answer > how to avoid Java util. Concurrent modificationexception when iterating through and removi…… -
How to substring a UTF8 string in Java?
Suppose I have the following string: R ü ckrufinsausland. I need to insert it into a database with a maximum size of 1…… -
Java – how to correctly encode this URL
I tried to get this URL using jsoup http://betatruebaonline.com/img/parte/330/CIGUE ÑAL.JPG Even with coding, I have e…… -
How to use Xdebug and eclipse IDE for PHP
Hello, my PHP project is set up on the remote test machine I need to use the eclipse IDE for debugging How can I impro…… -
Java HashMap detected a collision
Is there a way to detect collisions in Java hash maps? Anyone can point out that there are many collisions where some …… -
Java – volatility of reference types – does it always avoid publishing references due to JMM?
Suppose this lesson: public class AmIThreadSafe { private int a; private int b; AmIThreadSafe(int a,int …… -
How to add JDBC Properties to spring / Hibernate?
I encountered the following error when trying to pass the value from the properties file to spring, so I don't have to…… -
Occurs before the relationship in the JAVA memory model
With regard to JLS ch17 threads and locks, it says "if an action occurs before another action, the first action is vis…… -
Java – continue statement marked in the while loop
The following simple example causes compile - time errors But it is not clear why public static void main (String[] ar…… -
The Java synchronization thread did not work as expected
The following code does not work properly: import java.util.ArrayList; import java.util.List; import java.util.Random;…… -
Java shutdown function not executed
In main () of my application, I have the following code to back up the data so that it will not be lost when the syste…… -
Confirm the Java LinkedList “foreach” loop
nice day, Someone can confirm the content at the bottom of the Java – iterating a linked list post. The post mentioned…… -
Java – there is no bean named ‘sessionfactory’ defined after opensessioninview filter
Well, because lazyinitializationexception, I need it on my web Add "opensessionviewinfilter" in XML and use the follow…… -
Java – why doesn’t implicit conversion happen here?
I'm looking to convert a char array to a set of characters Logically, if I write something like how to convert an arra…… -
Java – throw multiple exceptions from a method
How to throw multiple exceptions from one method at a time? Example: public void doA() throws Exception1,Exception2{ …… -
How do you use CouchDB change notifications to make continuous changes from Java?
I'm trying to use CouchDB (continuous) change API in Java and find that after exhausting the current change list, the …… -
How to perform different operations in update() of observer in Java?
I just started using observable, observer and its update () method. When different actions call notifyobservers (), I ……