The percentage represents how likely the [**Eclipse Code Recommenders**][1] (archived project since July 2019) think it is that you are looking for a certain completion based on the context and maybe prior usage and other variables (there are &quot;5 Intelligent Code Completion Engines&quot;). It is not only the bare usage statistics. So a value might change from 13% to 95% between some lines, depending what you did in between.

See [the docs for details][2] (archived project since July 2019):

&gt; It assists developers by recommending him only those methods that are actually relevant for his task at hand. For instance, given that a developer just created a text widget makes it obvious for Code Recommenders which methods a developer wants to use next - even if the developer doesn&#39;t know it by himself.

A download of the now archived project can be found here: http://archive.eclipse.org/archived_projects/recommenders.tgz

  [1]: http://www.eclipse.org/recommenders/
  [2]: http://www.eclipse.org/recommenders/documentation/usr.html#d0e32

In the Chrome or Firebug console:

    reg = /ab/g
    str = &quot;abc&quot;
    reg.exec(str)
       ==&gt; [&quot;ab&quot;]
    reg.exec(str)
       ==&gt; null
    reg.exec(str)
       ==&gt; [&quot;ab&quot;]
    reg.exec(str)
       ==&gt; null

Is exec somehow stateful and depends on what it returned the previous time? Or is this just a bug? I can&#39;t get it to happen all the time. For example, if &#39;str&#39; above were &quot;abc abc&quot; it doesn&#39;t happen.

Why does Javascript&#39;s regex.exec() not always return the same value?

I need to read the output of a command in my script into an array. The command is, for example:
      
    ps aux | grep | grep | x 

and it gives the output line by line like this:
      
    10
    20
    30

I need to read the values from the command output into an array, and then I will do some work if the size of the array is less than three.

Reading output of a command into an array in Bash

I started using Eclipse Juno a few days ago after using older versions for years.

There&#39;s one thing that&#39;s really bothering me: What do that percentages next to the methods in the auto-complete box mean?

![Screenshot of Percentages in Autocomplete Box][1]


  [1]: http://i.stack.imgur.com/i7RKi.png

Eclipse Autocomplete (percent sign, in Juno)

I started using Eclipse Juno a few days ago after using older versions for years.
There's one thing that's really bothering me: What do that percentages next to the methods in the auto-complete box mean?
<img src="http://i.stack.imgur.com/i7RKi.png" alt="Screenshot of Percentages in Autocomplete Box">

I saw many questions about this, and tried to solve the problem, but after one hour of googling and a lots of trial &amp; error, I still can&#39;t fix it. I hope some of you catch the problem.

This is what I get:

&lt;!-- language: none --&gt;

    java.lang.IllegalArgumentException: Comparison method violates its general contract!
    	at java.util.ComparableTimSort.mergeHi(ComparableTimSort.java:835)
    	at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:453)
    	at java.util.ComparableTimSort.mergeForceCollapse(ComparableTimSort.java:392)
    	at java.util.ComparableTimSort.sort(ComparableTimSort.java:191)
    	at java.util.ComparableTimSort.sort(ComparableTimSort.java:146)
    	at java.util.Arrays.sort(Arrays.java:472)
    	at java.util.Collections.sort(Collections.java:155)
        ...

And this is my comparator:

    @Override
    public int compareTo(Object o) {
        if(this == o){
            return 0;
        }
        
        CollectionItem item = (CollectionItem) o;

        Card card1 = CardCache.getInstance().getCard(cardId);
        Card card2 = CardCache.getInstance().getCard(item.getCardId());

        if (card1.getSet() &lt; card2.getSet()) {
            return -1;
        } else {
            if (card1.getSet() == card2.getSet()) {
                if (card1.getRarity() &lt; card2.getRarity()) {
                    return 1;
                } else {
                    if (card1.getId() == card2.getId()) {
                        if (cardType &gt; item.getCardType()) {
                            return 1;
                        } else {
                            if (cardType == item.getCardType()) {
                                return 0;
                            }
                            return -1;
                        }
                    }
                    return -1;
                }
            }
            return 1;
        }
    }

Any idea?

Java error: Comparison method violates its general contract

I have a a `Map&lt;String,Foo&gt; foosMap` that I want to serialize through Jackson . Now I want following two settings on the serialization process:

 1. The Map can have  have plenty of null values and null keys and I don&#39;t want nulls to be serialized.
 2. For all those Foos that are getting serialized, I do not want to serialize null objects referenced inside Foo.

What is the best way to achieve this ? I am using jackson-core1.9 and jackson-mapper1.9  jars in my project. 

How to prevent null values inside a Map and null fields inside a bean from getting serialized through Jackson

I have a small question about IntelliJ IDEA 11. I just imported a project from subversion - its a maven project. But I have a problem in maven library dependencies so that I can&#39;t include all maven dependencies automatically - IDEA shows dependency errors only when I open that class/ Thats what I get here:

![enter image description here][1]


So I want all dependencies to be added automatically - is that possible or do I have to go through all class files to identify and add maven dependencies?!


UPDATE: After doing some modifications I found how to resolve my problem in some way. Thats what I did:
![enter image description here][2]

  [1]: http://i.stack.imgur.com/v5K5p.png
  [2]: http://i.stack.imgur.com/KslcB.png



but I think logically it will not include and check new dependencies ahead?!... Is there any settings area for this in intelliJ - auto export dependencies to classpath ?!


Import Maven dependencies in IntelliJ IDEA

    private double value;

    public synchronized void setValue(double value) {
        this.value = value;
    }
    public double getValue() {
        return this.value;
    }

In the above example is there any point in making the getter synchronized?

Should getters and setters be synchronized?

I am trying to get my first taste of Android development using Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago.

After first trying to start `Eclipse` without any parameters to specify the Java VM, I got an error message saying it `couldn&#39;t find a Java VM called javaw.exe inside the Eclipse folder`, so I found where Java was installed and specified that location as the parameter in the shortcut&#39;s target. Now I get a different error, `Java was started but returned exit code=13`.

Similar questions seem to indicate that it&#39;s a 32-bit/64-bit conflict, but I&#39;m 99% positive that I downloaded 64-bit versions of both Eclipse and `Java (RE 7u5)`, which I chose because I have 64-bit Windows 7. 

 - If anyone knows how to confirm that my Eclipse and Java are 64-bit,
   that&#39;d be appreciated.
 - If you think my problem is a different one, please help!
 - Please speak as plainly as you can, as I am totally new to Eclipse
   and Java.

&gt;Shortcut Target: &quot;C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\eclipse.exe&quot; -vm &quot;C:\Program Files (x86)\Java\jre7\bin\javaw.exe&quot;

**Full error code...:**

    Java was started but returned exit code=13
    C:\Program Files (x86)\Java\jre7\bin\javaw.exe
    -Xms40m
    -Xmx512m
    -XX:MaxPermSize=256m
    -jar C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\\plugins/org.eclipse.equinox.launcher_1.30v20120522-1813.jar
    -os win32
    -ws win32
    -arch x86_64
    -showsplash C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\\plugins\org.eclipse.platform_4.2.0.v201206081400\splash.bmp
    -launcher C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\eclipse.exe
    -name Eclipse
    --launcher.library C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\\plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v201205221813\eclipse_1503.dll
    -startup C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\\plugins/org.eclipse.equinox.launcher_1.30v20120522-1813.jar
    --launcher.overrideVmargs
    -exitdata 1e30_5c
    -vm C:\Program Files (x86)\Java\jre7\bin\javaw.exe
    -vmargs
    -Xms40m
    -Xmx512m
    -XX:MaxPermSize=256m
    -jar C:\Program Files\Eclipse-SDK-4.2-win32-x86_64\eclipse\\plugins/org.eclipse.equinox.launcher_1.30v20120522-1813.jar

Can&#39;t start Eclipse - Java was started but returned exit code=13

I can&#39;t compile/debug our Android app, because the localization files are not perfect yet.

My IDE&#39;s validation tool [Lint][1] create errors saying:

&gt; newCardsOrderVals is not translated in ar, bg, ca, cs

Compiling/installing/running with Ant works fine, but I would like to use my IDE to ease debugging.

Is there a way to turn off this particular check, or ideally make it a warning rather than an error?

I understand that before release we will really need to get localisation files right, but for the time being it is not a priority as the screens themselves are being modified very frequently.


  [1]: http://tools.android.com/tips/lint/

Lint: How to ignore &quot;&lt;key&gt; is not translated in &lt;language&gt;&quot; errors?

I am getting the above error: 

&gt; error opening trace file: No such file or directory (2)

when I run my android application on the emulator.  Can someone tell me what could be the possible reason for this?

I am using android-sdk-20 and below lines are added to AndroidManifest.xml

    &lt;uses-sdk android:minSdkVersion=&quot;14&quot; android:targetSdkVersion=&quot;15&quot; /&gt;

I have also added the line:

    &lt;uses-permission android:name=&quot;android.permission.WRITE_EXTERNAL_STORAGE&quot; /&gt;

since I thought that there may be some issue with writing to the sd card.


error opening trace file: No such file or directory (2)

I&#39;m using Eclipse PDT on a rather large PHP project and the IDE is almost unusable. It takes nearly 30 seconds to open a file, and other actions, like selecting a folder in the file explorer, editing some text, etc. are equally slow.

I followed various instructions to speed it up but nothing seems to work. This is my current `eclipse.ini` file. Any idea how I can improve it?

	-startup
	plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
	--launcher.library
	plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120522-1813
	-showsplash
	org.eclipse.platform
	--launcher.XXMaxPermSize
	256m
	--launcher.defaultAction
	openFile
	-vmargs
	-server
	-Dosgi.requiredJavaVersion=1.7
	-Xmn128m
	-Xms1024m
	-Xmx1024m
	-Xss2m
	-XX:PermSize=128m
	-XX:MaxPermSize=128m
	-XX:+UseParallelGC
	
System: Eclipse 4.2.0, Windows 7, 4 GB RAM

Very slow Eclipse 4.2, how to make it more responsive?

How do I remove the &quot;Quick Access&quot; text entry from Juno&#39;s CDT toolbar? I never use it and it consumes valuable space on my laptop screen.

Remove &quot;Quick Access&quot; entry in Eclipse Juno

I have just upgraded to Eclipse Juno 4.2. I have a completely clean new workspace, but have imported projects that have previously been used in Eclipse 3.7 and therefore have some Eclipse metadata in them.

When moving to 4.2 I converted a project to use &quot;Project Facets&quot;. The only Facet enabled is &quot;Java&quot;.

However, I regularly get &quot;JPA Java Change Event Handler (Waiting)&quot; appearing in my progress view. I do have JPA annotated classes within the project, but I do not have the JPA facet enabled.

So...why am I getting these tasks being run by Eclipse?

![Screenshot of eclipse progress window][1]

  [1]: http://i.stack.imgur.com/Qh9Fm.png

*Update:* Have submitted bug to Eclipse and it is being looked at by the looks of it: https://bugs.eclipse.org/bugs/show_bug.cgi?id=386171

Why is Eclipse Juno 4.2 running &quot;JPA Java Change Event Handler&quot; processes?

I have been using Indigo for a while, and now trying Juno  
There is a sligth bothering difference:

On Indigo When you had 10 tabs opened

   A | **B** | C | D | J | H | G ....(F | T | S)

and currently on B  
when you selected the file shown in tab T again, then this tab (on **Indigo** and that&#39;s the problem not on Juno) would be repositioned like that:


   A | B | **T** | C | D | J | H  ....( G | F | S)

This is useful since, if opening T after B, it means they should be grouped together

on Juno it does not reposition them, instead you will need to find most recent files far in the tab list

Q: how to set it back? I searched params with &#39;tabs&#39; in the options with no result

edit: still the same in new versions (Kepler)

edit: Thanks to Paul&#39; answer, a good solution is to search for .css files in eclipse folder, and set swt-mru-visible property to true in e4-default-win7.css for example

Eclipse tabs repositionning

I have installed:

 - eclipse juno
 - java-6-openjdk-i386 (selected as default JRE in Eclipse)
 - java-7-openjdk-i386

When I try to add a new server Tomcat7, in Eclipse, I get this message 

**&#39;Cannot create a server using the selected type&#39;**

and I can not continue. No problem adding Tomcat6 server.

I read this [question][1] but it didn&#39;t solve it for me 


  [1]: https://stackoverflow.com/questions/8025841/eclipse-3-7-indigo-tomcat7-cannot-create-a-server-using-the-selected-typ

Eclipse 4.2 (Juno) &#39;Cannot create a server using the selected type&#39; in Tomcat 7

EDIT: It turns out this really isn&#39;t specific to Eclipse Kepler. I had to use the same process for Eclipse Juno. The problem was that there seem to be missing steps in other posts answering this same question.

I&#39;m using Eclipse Kepler for C++ and I&#39;m trying to use C++11 and getting errors. When I compile I get the error

error: range-based-for loops are not allowed in C++98 mode

I&#39;ve followed the instructions from the post

https://stackoverflow.com/questions/9131763/eclipse-cdt-c11-c0x-support

and the solution given for Eclipse Juno isn&#39;t working. 

Different comments have suggested restarting eclipse and cleaning and rebuilding. That hasn&#39;t made a difference.

Content Type	Original Author	Original Content on Stackoverflow
Question	user1518577	View Question on Stackoverflow
Solution 1 - Java	Wolfram	View Answer on Stackoverflow

Eclipse Autocomplete (percent sign, in Juno)

Java Problem Overview

Java Solutions

Solution 1 - Java

Reading output of a command into an array in Bash

Why does Javascript's regex.exec() not always return the same value?

Attributions