包含标签:Java 的文章
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Multithreading – OO design pattern for multithreading synchronization
Is there any generalization of objects and data and thread interactions for a given design pattern name? Obviously, sy…… -
“No select item” on JavaFX combo box?
stay Combo@R_705_2419 @What is the correct way to place items with null values in? Exception in thread "JavaFX Applica…… -
Java – restrict access to spring MVC controller – N sessions at a time
We have licensed commercial products (unimportant products in this case), which is limited by the number of concurrent…… -
Java – how to dynamically set rowheight in JTable
I want to place a string in a JTable that is longer than the given cell width import javax.swing.*; public class Exam…… -
Time complexity of Java Pascal triangle algorithm
Responsible for solving the following problems (Pascal triangle), which looks like this [ [1],[1,1],2,3,4,6,1] ] …… -
Java class comparator?
I want to compare two Java classes class ClassComparator implements Comparator<Class> { @Override public…… -
How to use JfreeChart to display dates on the X axis of a line chart
I tried to display the line chart with time (HH: mm: SS) as X axis and number (as y axis) for (Row row : sheet) { …… -
Java – programmatically resolve Maven dependencies outside the plug-in – get the repository systemsession and repository system
Maybe this will be a bigger task than I thought at first, but no matter I try to load a maven project from a file and …… -
Java – how to create a wicket URL that hides its parameters?
I am currently creating a set of links with the following code: BookmarkablePageLink<CheeseMain> havarti = n…… -
java – JNI. How to get jstring from jobobject and convert it to char*
This is what I have done so far: JNIEXPORT jint JNICALL Java_Tier3_NativeMethods_totalPalletsIn( jnienv *e…… -
Java – why is static final slower than new at each iteration
Why is code snippet 14 times slower than code snippet B? Code snippet A: import java.awt.geom.RoundRectangle2D; publi…… -
Java – how to use order in HQL?
I want to execute my HQL query like this: Query queryPayment=sixSession.createQuery("from Payment where vcode=:p_Vcode…… -
Java – cast to inner classes using generics
Consider the following codes: public class Outer<T> { public class Inner{ } public static <T&g…… -
Java – hibernate query cache is automatically refreshed when external updates are made?
I am creating a service with read - only access to the database In Hibernate, I have a query cache and L2 cache enable…… -
Java: text strings
class A { class A { String s4 = "abc"; static public void main(String[]args ) { String s1 = "abc"; …… -
I really need to define the minimum heap size for Java
I'm about to deploy the application to the real-time server, and now I'm in the part of setting the heap and permgen s…… -
Java classloader dilemma and locked jar
I was playing with classloaders in Java and noticed a strange thing If the classloader loads a class from a jar, even …… -
Java – NullPointerException at the end of the file
What I want is to access the EOF by reading the command line from the console and typing Ctrl z from the BufferedReade…… -
Java implicit conversion
Use the following code: Float a = 1.2; There is an error because it takes decimal as the value of double, which is a l…… -
Java – andengine – cannot instantiate activity
I'm a novice in Android development. I have a problem using andengine I tried to run an empty application, but got a r…… -
Binary search in the sequential table in Java
I'm looking for a way to implement code in Java, which works the same as binary search in ordered ArrayList, but for o…… -
java – ClassNotFoundException Android
So I encountered a problem when dealing with Android programs I have a class that converts XML strings into Java objec…… -
Java – restlet client repeatedly calls restlet server suspend
I am using restlet to implement web services The client (also using restlet) makes several consecutive calls to the se…… -
An unexpected error occurred while using Lambdas in Java 8
I use Java 8 update 20 32-bit, Maven 3.2 3. Eclipse Luna build ID: 20140612-0600 32 bits After I started using Lambdas…… -
The performance of regular expressions in Java is compared with that of indexof
Please tell me how to match "" And period "." It is also more effective to use indexof () instead of regular expressio…… -
What does the Java – cvhaardetectobjects () method do?
Some experts can explain whether I can use the cvhaardetectobjects () method to detect the box and obtain the width an…… -
Java: text strings
class A { class A { String s4 = "abc"; static public void main(String[]args ) { String s1 = "abc"; …… -
Why is tomee Java ee6 certified but not tomee?
As the title says I know very little about the internal working principle of Java ee6 certification However, it seems …… -
How to send int through UDP in Java
I'm trying to write some code to send a single int through UDP My code so far: From: int num = 2; DatagramSocket sock…… -
Java – set the location of Jfilechooser
How do we set the location of the Jfilechooser window? I tried the setlocation () and setbounds () methods, but it did…… -
What is the best way to learn security in Java A-Z
I am a J2SE / Jee developer, a novice in Java security, and plan to learn more about this topic You can help me guide …… -
Variable declaration in Java – if clause
if(someCondition) if(someCondition) int a=10;//Compilation Error else if(SomeOtherCondition){ int b=10;//no compilat……