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java Programming Glossary: testAdd a complex image in the panel, with buttons around it in one customized user interface http://stackoverflow.com/questions/10861852/add-a-complex-image-in-the-panel-with-buttons-around-it-in-one-customized-user one from Andrew Thompson at least my broken method package test import java.awt. import java.awt.font.FontRenderContext import.. JFrame.EXIT_ON_CLOSE pack setVisible true package test import java.awt. import java.io.IOException import java.io.InputStream..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array GCC can generate In other words ICC took advantage of the test loop to defeat the benchmark... If you give the Intel Compiler..
Populating child dropdownlists in JSP/Servlet http://stackoverflow.com/questions/2263996/populating-child-dropdownlists-in-jsp-servlet c forEach select select name dd2 onchange submit c if test empty dd2options option Please select parent option c if c forEach.. option.value option c forEach select select name dd3 c if test empty dd3options option Please select parent option c if c forEach.. 2263996 title script src http code.jquery.com jquery latest.min.js script script document .ready function '#dd1' .change..
Placing component on Glass Pane http://stackoverflow.com/questions/2561690/placing-component-on-glass-pane manually rendered a representation of the JLabel. package test import java.awt.Color import javax.swing.JFrame import javax.swing.JLabel..
Avoiding “!= null” statements in Java? http://stackoverflow.com/questions/271526/avoiding-null-statements-in-java most used idiom code snippet I'm programming in Java is to test if an object null before I use it. This is to avoid a NullPointerException.. clear with my question. I want to address the necessity to test every object if you want to access a field or method of this.. is null or not. So my code get splattered with these tests. Nevertheless thanks a lot for your answers I got a bunch of..
What are the pros and cons of the leading Java HTML parsers? http://stackoverflow.com/questions/3152138/what-are-the-pros-and-cons-of-the-leading-java-html-parsers HTML parser. It's a real GUI less webbrowser and HTML unit testing tool. Jsoup Jsoup also provides a completely own API. It.. often is it updated maintained fixed . If you like to unit test the HTML then HtmlUnit is the way to go. If you like to extract..
JSTL in JSF2 Facelets… makes sense? http://stackoverflow.com/questions/3342984/jstl-in-jsf2-facelets-makes-sense For that purpose the JSTL tags seem to work fine c if test lpc.verbose ... c if However I'm not sure if this is a best..
Switch Statement with Strings in Java http://stackoverflow.com/questions/338206/switch-statement-with-strings-in-java the label. The corresponding case is an if statement that tests string equality if there are collisions on the hash the test.. string equality if there are collisions on the hash the test is a cascading if else if . The second switch mirrors that in..
What's the proper way to test a class with private methods using JUnit? http://stackoverflow.com/questions/34571/whats-the-proper-way-to-test-a-class-with-private-methods-using-junit the proper way to test a class with private methods using JUnit How do I use JUnit.. with private methods using JUnit How do I use JUnit to test a class that has internal private methods It seems bad to change.. the access modifier for a method just to be able to run a test. java unit testing junit tdd private share improve this question..
How do I write a correct micro-benchmark in Java? http://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java Rule 1 Always include a warmup phase which runs your test kernel all the way through enough to trigger all initializations.. the warmup phase or final reporting phase unless you are testing class loading specifically and in that case load only the.. class loading specifically and in that case load only the test classes . Rule 2 is your first line of defense against such..
Connection pooling options with JDBC: DBCP vs C3P0 [closed] http://stackoverflow.com/questions/520585/connection-pooling-options-with-jdbc-dbcp-vs-c3p0 we conducted an in house analysis of the two creating a test fixture which generated load and concurrency against the two.. DBCP consistently generated exceptions into our test application and struggled to reach levels of performance which..
Why is subtracting these two times (in 1927) giving a strange result? http://stackoverflow.com/questions/6841333/why-is-subtracting-these-two-times-in-1927-giving-a-strange-result questions like this in Noda Time in the form of unit tests ... The test has now been changed but it just goes to show.. like this in Noda Time in the form of unit tests ... The test has now been changed but it just goes to show not even historical..
Efficiency of Java “Double Brace Initialization”? http://stackoverflow.com/questions/924285/efficiency-of-java-double-brace-initialization Experiment Here's the simple experiment I've tested make 1000 ArrayList s with the elements Hello and World added.. 15 16 milliseconds. The results for 10 runs of the two tests were the following Test1 Times ms Test2 Times ms 187 0.. by compiling the Test1 double brace initialization test program. Finally thank you for reading this extremely long answer..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array the next loop runs faster std sort data data arraySize Test clock_t start clock long long sum 0 for unsigned i 0 i 100000.. 256 With this the next loop runs faster Arrays.sort data Test long start System.nanoTime long sum 0 for int i 0 i 100000 i..
Waiting for multiple SwingWorkers http://stackoverflow.com/questions/11366330/waiting-for-multiple-swingworkers import javax.swing. public class TestApplet extends JApplet @Override public void init try SwingUtilities.invokeAndWait.. import javax.swing. public class TestApplet extends JApplet private Queue JLabel labels new LinkedList.. stackoverflow.com a 3588523 230513 public class WorkerLatchTest extends JApplet private static final int N 8 private static..
How to really read text file from classpath in Java http://stackoverflow.com/questions/1464291/how-to-really-read-text-file-from-classpath-in-java take this code package dummy import java.io. public class Test This code is nasty and not exception safe. Just demo code public.. void main String args throws Exception InputStream stream Test.class.getResourceAsStream SomeTextFile.txt System.out.println.. SomeTextFile.txt System.out.println stream null stream Test.class.getClassLoader .getResourceAsStream SomeTextFile.txt System.out.println..
http://stackoverflow.com/questions/1688099/converting-json-to-java java.util.List import com.google.gson.Gson public class Test public static void main String... args throws Exception String..
Get generic type of java.util.List http://stackoverflow.com/questions/1942644/get-generic-type-of-java-util-list java.util.ArrayList import java.util.List public class Test List String stringList new ArrayList String List Integer integerList.. main String... args throws Exception Field stringListField Test.class.getDeclaredField stringList ParameterizedType stringListType.. class java.lang.String. Field integerListField Test.class.getDeclaredField integerList ParameterizedType integerListType..
http://stackoverflow.com/questions/2275443/how-to-timeout-a-thread import java.util.concurrent.TimeoutException public class Test public static void main String args throws Exception ExecutorService..
How do I programmatically compile and instantiate a Java class? http://stackoverflow.com/questions/2946338/how-do-i-programmatically-compile-and-instantiate-a-java-class source somehow. String source package test public class Test static System.out.println hello public Test System.out.println.. public class Test static System.out.println hello public Test System.out.println world Save source in .java file. File root.. on C this is C java. File sourceFile new File root test Test.java sourceFile.getParentFile .mkdirs new FileWriter sourceFile..
http://stackoverflow.com/questions/299068/how-slow-are-java-exceptions local try block. See the following test code public class Test int value public int getValue return value public void reset.. public static void main String args int i long l Test t new Test l System.currentTimeMillis t.reset for i 1 i 100000000.. static void main String args int i long l Test t new Test l System.currentTimeMillis t.reset for i 1 i 100000000 i t.method1..
Evaluating a math expression given in string form http://stackoverflow.com/questions/3422673/evaluating-a-math-expression-given-in-string-form import javax.script.ScriptEngine public class Test public static void main String args throws Exception ScriptEngineManager..
JTable design to synchronize with back-end data-structure http://stackoverflow.com/questions/3590897/jtable-design-to-synchronize-with-back-end-data-structure popupEditor JFrame frame new JFrame Popup Editor Test frame.setDefaultCloseOperation JFrame.EXIT_ON_CLOSE frame.getContentPane..
How to increase to Java stack size? http://stackoverflow.com/questions/3700459/how-to-increase-to-java-stack-size for me and with far less than 999MB of stack java Xss4m Test 0 Windows JDK 7 build 17.0 b05 client VM and Linux JDK 6 same..
http://stackoverflow.com/questions/5853879/swing-obtain-image-of-jframe r new Runnable public void run final JFrame f new JFrame Test Screenshot JMenuItem screenshot new JMenuItem Screenshot screenshot.setAccelerator.. the 'one line fix' by Darryl Burke. LabelRenderTest.java Here is an updated variant of the code shown on the second.. import javax.swing. public class LabelRenderTest public static void main String args SwingUtilities.invokeLater..
Why is subtracting these two times (in 1927) giving a strange result? http://stackoverflow.com/questions/6841333/why-is-subtracting-these-two-times-in-1927-giving-a-strange-result start of 1900 UTC import java.util.TimeZone public class Test public static void main String args throws Exception long startOf1900Utc..
Efficiency of Java “Double Brace Initialization”? http://stackoverflow.com/questions/924285/efficiency-of-java-double-brace-initialization file to perform 1000 initializations using the two methods Test 1 class Test1 public static void main String s long st System.currentTimeMillis.. 1000 initializations using the two methods Test 1 class Test1 public static void main String s long st System.currentTimeMillis.. add World System.out.println System.currentTimeMillis st Test 2 class Test2 public static void main String s long st System.currentTimeMillis..
paintComponent does not work if its called by the recursive function? http://stackoverflow.com/questions/10338163/paintcomponent-does-not-work-if-its-called-by-the-recursive-function void main String args int e 1 JFrame frame new JFrame TEST frame.setDefaultCloseOperation JFrame.EXIT_ON_CLOSE exampe ex..
How to check if a URL exists or returns 404 with Java? http://stackoverflow.com/questions/1378199/how-to-check-if-a-url-exists-or-returns-404-with-java does not exists This should print exists does not exists TEST public static String URL http www.nbc.com Heroes novels downloads..
Remove all non-“word characters” from a String in Java, leaving accented characters? http://stackoverflow.com/questions/1611979/remove-all-non-word-characters-from-a-string-in-java-leaving-accented-charact characters as non word characters when I use Regex. TEST TEST .replaceAll W returns TESTTEST for me. What I want is for.. characters as non word characters when I use Regex. TEST TEST .replaceAll W returns TESTTEST for me. What I want is for only.. when I use Regex. TEST TEST .replaceAll W returns TESTTEST for me. What I want is for only all truly non word characters..
Paste a multi-line Java String in Eclipse http://stackoverflow.com/questions/2159678/paste-a-multi-line-java-string-in-eclipse it easy to work with constructs like String x CREATE TABLE TEST n A INTEGER NOT NULL PRIMARY KEY n ... What is the fastest..
http://stackoverflow.com/questions/415580/regex-named-groups-in-java Strings with Balanced Parentheses slide Example String TEST 123 RegExp login w id d Access matcher.group 1 TEST matcher.group.. String TEST 123 RegExp login w id d Access matcher.group 1 TEST matcher.group login TEST matcher.name 1 login Replace matcher.replaceAll.. w id d Access matcher.group 1 TEST matcher.group login TEST matcher.name 1 login Replace matcher.replaceAll aaaaa_ 1_sssss_..
Calling a Servlet from a Java application http://stackoverflow.com/questions/4349854/calling-a-servlet-from-a-java-application ActionPackage p new ActionPackage p.addParameter TEST VALUE System.out.println p URL gwtServlet null try gwtServlet..
Change ListView background - strange behaviour http://stackoverflow.com/questions/4583349/change-listview-background-strange-behaviour else v.setBackgroundResource R.drawable.row_blue TESTING Log.d onClick Channel onClick Channel ch.getTitle selected.. null call own implementation holder createHolder view TEST we set the holder as tag view.setTag holder else get holder..
http://stackoverflow.com/questions/5846183/arraylist-vs-linkedlist final static int WARMUP 1000 private final static int TEST 1000 private final static int SIZE 500000 public void perfTest.. 0 i WARMUP i buildArrayList Test long sum 0 for int i 0 i TEST i sum buildArrayList System.out.println Average time to build.. System.out.println Average time to build array list sum TEST public long buildArrayList long start System.nanoTime ArrayList..
Restrict multiple instances of an application in java http://stackoverflow.com/questions/6134694/restrict-multiple-instances-of-an-application-in-java toFront System.exit 0 else frame new JFrame TEST frame.setDefaultCloseOperation JFrame.EXIT_ON_CLOSE frame.setSize..
How Can I Access an SSL Connection Through Android? http://stackoverflow.com/questions/6441158/how-can-i-access-an-ssl-connection-through-android PrintWriter s.getOutputStream while true out.println SSL TEST Log.d DATA DATA SENT catch UnknownHostException e TODO Auto..
Fastest way to iterate over all the chars in a String http://stackoverflow.com/questions/8894258/fastest-way-to-iterate-over-all-the-chars-in-a-string 0 1 n 2 sizes.add n CREATE RANDOM FOR SHUFFLING ORDER OF TESTS final Random random new Random System.out.println Rate in nanoseconds.. chars check nanos System.nanoTime time MAKE A TEST STRING OF RANDOM CHARACTERS A Z private String makeTestString..
Java KeyListener Not Registering Arrow Keys http://stackoverflow.com/questions/8961938/java-keylistener-not-registering-arrow-keys KeyEvent e int key e.getKeyCode System.out.println TEST if key KeyEvent.VK_KP_LEFT key KeyEvent.VK_LEFT System.out.println.. I type anything other than the arrow keys e.g. a it prints TEST as it should. However when I type a numpad arrowkey it only.. However when I type a numpad arrowkey it only prints TEST and when I type a standard arrow key it doesn't print anything..
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