Java
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Java – store data from Excel files from Android Applications
My application generates data that I want to share, such as transferring to my PC and working or sending to others as …… -
Java – how to send a string from a worker thread to a text area?
public class Client1 implements Runnable{ public class Client1 implements Runnable{ ServerSocket serverSocket = n…… -
Java – impact of transaction timeout EJB on threads
Questions about EJB: Suppose I have a session bean with infinite loops It runs under EJB transactions Now when the EJB…… -
How do I use jlists in JTable cells?
I want a simple way to put JList in the JTable column I already have jlists and tables, but when I put them into the t…… -
Java DOM XML file creation – there are no tabs or spaces in the output file
I've checked the post on stack overflow, but it doesn't seem to help What is this: // write the content into xml file …… -
Java – connect to multiple databases using different JDBC drivers
I need to write a daemon based java process (not web-based), which will connect to Oracle 10g database, read some data…… -
Java – from Mp3 or Wav file calculation frequency?
I'm trying to do some note recognition on MP3 or WAV files The question is: how to use FFT on files? I prefer Java sol…… -
Java – how to store objects from a database?
I am developing a Java application that will graphically depict and organize hundreds of objects Each of these objects…… -
Java: detect object name?
I'm playing a little game with an attacker and a defender Player Attacker = new Player(); Player Deffender = n…… -
Java – faster read () or read (byte, offset, length) InputStream
I am writing an application using socket InputStream for Android I tried to send files from my PC to Android in this w…… -
Java How to disable rounding in decimalformat
Can I disable rounding in decimalformat? For example: DecimalFormat f = new DecimalFormat(); f.parSEObject( “123456789…… -
Java – can JBoss seam be used on applications that are not web applications?
I mean, can seam be used in back-end applications that only provide functionality through remote EJBs or web services …… -
Java – type conversion required for function calls, with short data type variables as parameters
Whenever I use byte or short data types as method parameters, I need to explicitly convert the values I pass to these …… -
Java – ArrayLists using tuple (double, int, int) are slower than two ArrayLists
Is an ArrayList using tuple (double, int, int) slower than three separate ArrayLists? I want to avoid creating a large…… -
Java – add the difference between string literals and string objects
What is the difference between adding string literal and string object? for example String s1 ="hello"; String s2 …… -
Compare Java. Net in Java sql. The right way to time
Which method can compare time in Java? I mean Java sql. Time. Or is there a better way to compare joda time? Solution …… -
How the Java language works
I don't know Java very well, so I want to ask how this language works I mean not only "language", but also virtual mac…… -
Java – definition: unfinalized and finalizable objects
In order to understand weak references in Java, I have to refer to the Java language specification The following secti…… -
Java – add Export Wizard to eclipse RCP standalone application
Hello <extension id="exportScript" point="org.eclipse.ui.exportWizards"> <wizard class="c…… -
Java – where to put non-public classes?
Suppose I have a Java class A, which needs an auxiliary class B. This auxiliary class is only used in a and has no oth…… -
Java – how to check whether the user name exists in the database before submitting to create a user with Hibernate?
Hi, I have a simple login service. I use GWT, hibernate & HSQLDB Now I can create an account, but I need to add a …… -
Java – JSON deserialization problem
There is an array. When the size is 1, the JSON data I receive does not contain []; like {"firstname":"tom"} When the …… -
Java – how to organize OO design using two different types of users
I have two different types of users. I map them to two Java classes userwheel and usersea, which have a public abstrac…… -
Java – persistent httpurlconnections on Android
I have a problem trying to get an Android application using a persistent HTTP 1.1 connection (well, service, it's diff…… -
Java – many versions of JDK: how to specify which one to use?
I installed many versions of JDK: 1.4 2, 1.5 and 1.6 Solution Two solutions >Specify the full path in the command: …… -
Java – using enum or string as static factory methods?
Would it be better to schedule to the correct object using enum or string to create it in a static factory method? Str…… -
Is java like “properties” in c#?
See English answers > does java have "properties" that work the same way properties work in c#? 5 I searched for Ja…… -
Configuration file in Java
I created a swing application GUI, which contains textfields, labels, Check@R_780_2419 @Es and Combo@R_780_2419 @Es an…… -
Use runtime What is the reason for “the system cannot find the specified file” caused by exec? (Association / ftype)
Who knows why these two statements cause the displayed exception? Runtime.getRuntime().exec("assoc .vlan=\"file type d…… -
Java – what is this language feature called?
JPanel panel = new JPanel() { JPanel panel = new JPanel() { public void setBackground(Color c) { Lo…… -
Java – add value for double [] ArrayList
I have the following array ArrayList<double[]> db_results = new ArrayList<double[]>(); I want to add such …… -
Java – why don’t I own this class when it should be in rt.jar?
So, I'm trying to implement LDAP connection in Java... This requires com sun. jndi. ldap. LdapCtxFactory. Jarfinder sh……