Java
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Java – how do I get the last 25 elements of sortedset?
In Java, I have a sortedset, which may have 100000 elements I want to get the last 25 elements efficiently and gracefu…… -
Java – hibernate many to one mapping and different column numbers
Hi, I have two tables as follows Table 1: +-------------------+ | ID LOB col1 col2 | +-------------------…… -
Java – scroll large canvas
I need some help to understand the basics of scrolling items drawn on the canvas in Android Suppose I want to create a…… -
Complete list of default java system properties [closed]
Do all system properties have references or complete documentation for a specific JRE set? I don't mean the system pro…… -
Can JNI be used to reference C objects in Java code?
I don't see anywhere (or maybe I simply don't see it), but is there a way to return a C / C object using JNI and use i…… -
Multithreading – how long does each thread slice take in Windows XP?
I tried to find out how long each thread timeslice took in windows, but the only information I found was about clock c…… -
Java – converts a negative image to a positive number
I have scanned my computer for old movies I want to write a small program to convert negative images into positive one…… -
Java – apacheds cannot create a new entry
I am using Apache directory studio 2.0 0 and apacheds 2.0 After creating a new partition, o = seven seas, DC = com, as…… -
How to handle duplication between Java enumerations and database tables?
In our application, it is common that some entities must be represented by enumerations: for example, types, categorie…… -
Java – error creating bean named defaultservlethandlermapping
I convert all XML spring configurations into Java code, but I can't run all the tests (they used before) because I hav…… -
Java – what is the best way to initialize beans?
In spring, you can make ApplicationContext XML calls the constructor to initialize a bean, or you can set properties o…… -
Java – conditional operator in consecutive strings
I wonder why the following program throws an NPE public static void main(String[] args) { Integer testInteger = nu…… -
Java – the logback file appender will not be refreshed immediately
In some cases, I need to force a refresh in the log folder immediately I found in docs that this option is enabled by …… -
Java – aerospike: how to get the record key?
The aerospike client has a scanall method to read all rows in its store ScanPolicy policy = new ScanPolicy(); policy.c…… -
Java – does the member interface in the class declaration imply public?
code I have a class with a member interface: package com.example.withinterface; public class SomeClass { interfa…… -
Java – drag and drop nodes in JTree
I can't create a JTree that allows you to reorganize nodes by dragging and dropping in JTree It seems that this should…… -
Java – swing validation code on the event dispatch thread at run time
Is there any library that can use code to verify that the swing component is called in the event scheduling thread? Wr…… -
Javafx-2 – JavaFX scrollpane border and background
I have some questions about the default background and border of scrollpane setStyle("-fx-background-color:blue; -fx-b…… -
Java – use {} after semicolon
See English answers > anonymous code blocks in java7 MenuItem menu1 = menu.add(0,"Item 1"); { menu1.setIcon(R.dra…… -
Java – pylucene error and icetea / JDK / JRE
I use the latest pylucene-4.9 0.0 followed the installation instructor http://bendemott.blogspot.de/2013/11/installing…… -
How do I capture HTTP (s) traffic from Java Web applications using fiddler2 or similar tools?
I want to capture the data that my web application sends and receives from the CAS server over HTTPS I tried fiddler2,…… -
Java – how to enable multi tenancy in Hibernate 4 using JPA?
It looks like my support for multi security has been added to hibernate and updated at least once since Getting multi …… -
Java – hibernate session thread safety
I know sessions are not thread safe My first question is: it's safe to pass an entity to another thread. Do some work,…… -
Java: jpprogressbar (or equivalent) is in the jtabbedpane tab header
If I really want to do this, I can place a jpprogressbar (or equivalent) in the jtabbedpane tab (I mean, not in the ta…… -
Java – Visual swing in eclipse
Is there any way to use a visual editor to swing applications in eclipse? I use Ganymede Solution I use jigloo a littl…… -
Clone () method in Java
As far as I know, the method clone () enables us to copy objects in Java (no reference) But I've also read that copy. …… -
Java for eclipse compilation JRE problem
I use Mac OS 10.6. After restoring my backup data, eclipse stops working It gave me the following errors: The containe…… -
Java – query of JAXB objects by XPath 1.0?
JAXB is a great, real time, but it is still very time-consuming to traverse the final object tree; Almost as bad as wo…… -
How to select the first n items in Java treemap?
Given this map SortedMap<Integer,String> myMap = new TreeMap<Integer,String>(); Instead of the for loop, i…… -
Short circuit evaluation relying on Java (coding style)
Is there a good coding style that relies heavily on short circuits in Boolean evaluation? I know who likes it For exam…… -
Java – how to clear errors in eclipse?
When using ADT for solar eclipse, I will encounter errors even if the problematic code is deleted In fact, even if I d…… -
Java – how to insert batch generated keys from JDBC into oracle?
I use JDBC to batch insert many records I'm using Oracle jdbc. OracleDriver final String insert = "Insert into Student……