Yes, your assumption is correct (you should always call ReleaseStringUTFChars).

So I want to [compare this folder][1] `http://cloudobserver.googlecode.com/svn/branches/v0.4/Boost.Extension.Tutorial/libs/boost/extension/` with [this][2] `http://svn.boost.org/svn/boost/sandbox/boost/extension/`. I want to get a diff file as a result. These folders are under svn control but I&#39;d prefer git styled diff file (like one [shown here][3]) I tried `git diff` but it seems not to work that way for web folders. So how to do the same thing with one command on Linux?

***Update:***
So we had [a great answer][4]. But it works strangely - it seems to me it shows that all files (same files) have all theire contents replaced with very same contents (while I know for sure that there were only like 3-4 code lines changed at all)...

***Update 2:***
To achieve what I really needed (dif file with only really changed lines, with git styling, on Linux) do:

    $ svn export http://cloudobserver.googlecode.com/svn/branches/v0.4/Boost.Extension.Tutorial/libs/boost/extension/ repos2 --native-eol CRLF
    $ svn export http://svn.boost.org/svn/boost/sandbox/boost/extension/ repos --native-eol CRLF
    $ git diff repos repos2 &gt; fileWithReadableDiff.diff

  [1]: http://cloudobserver.googlecode.com/svn/branches/v0.4/Boost.Extension.Tutorial/libs/boost/extension/
  [2]: http://svn.boost.org/svn/boost/sandbox/boost/extension/
  [3]: https://stackoverflow.com/questions/5836948/boost-extension-simple-inheritance-sample-why-we-see-no-animals-on-linux/5838527#5838527
  [4]: https://stackoverflow.com/questions/5874090/linux-how-to-get-diff-between-all-files-inside-2-folders-that-are-on-the-web/5874256#5874256


How to get diff between all files inside 2 folders that are on the web?

I have this CSS code with an `inline-block`. Can anyone tell me how to make it work in Internet Explorer 6 and 7. Any ideas? Maybe I&#39;m doing something wrong? Thank you!

    #signup {
       color:#FFF;
       border-bottom:solid 1px #444;
       text-transform:uppercase;
       text-align:center;
    }
    #signup #left {
       display: inline-block
    }
    #signup #right {
       background-image:url(images/signup.jpg);
       border-left: solid 1px #000;
       border-right: solid 1px #000;
       display: inline-block; 
       padding:1% 2%
       width:16%;
    }
    #signup #right a { font-size:100%; font-weight:bold } 
    #signup #right p { font-size:90%; font-weight:bold }
    #signup a:hover  { color:#FFF; text-decoration:underline }

Inline block doesn&#39;t work in internet explorer 7, 6

The book &quot;Essential JNI: Java Native Interface&quot; by Rob Gordon contains the following code example to convert a jstring to a C string:

    const char* utf_string;
    jboolean isCopy;
    utf_string = env-&gt;GetStringUTFChars(str, &amp;isCopy);
    /* ... use string ... */
    if (isCopy == JNI_TRUE) {
        env-&gt;ReleaseStringUTFChars(str, utf_string);
    }

Note that it only calls `ReleaseStringUTFChars` if `isCopy` is true. 

But the book [Java Native Interface: Programmer&#39;s Guide and Specification][1] (alternate link: `http://192.9.162.55/docs/books/jni/html/objtypes.html#5161`) says:

&gt; The ReleaseString-Chars call is
&gt; necessary whether GetStringChars has
&gt; set *isCopy to JNI_TRUE or JNI_FALSE.
&gt; ReleaseStringChars either frees the
&gt; copy or unpins the instance, depending
&gt; upon whether GetStringChars has
&gt; returned a copy or not.

I am correct in assuming this is a bug in Gordon&#39;s book?

  [1]: http://java.sun.com/docs/books/jni/html/objtypes.html#5161

Should you call ReleaseStringUTFChars if GetStringUTFChars returned a copy?

The book "Essential JNI: Java Native Interface" by Rob Gordon contains the following code example to convert a jstring to a C string:
<pre><code class="hljs language-ini">const char* utf_string;
jboolean isCopy;
utf_string = env->GetStringUTFChars(str, &#x26;isCopy);
/* ... use string ... */
if (isCopy == JNI_TRUE) {
 env->ReleaseStringUTFChars(str, utf_string);
}
</code></pre>
Note that it only calls <code>ReleaseStringUTFChars</code> if <code>isCopy</code> is true.
But the book <a href="http://java.sun.com/docs/books/jni/html/objtypes.html#5161" target="_blank" rel="noopener noreferrer">Java Native Interface: Programmer's Guide and Specification</a> (alternate link: <code>http://192.9.162.55/docs/books/jni/html/objtypes.html#5161</code>) says:
> The ReleaseString-Chars call is
> necessary whether GetStringChars has
> set *isCopy to JNI_TRUE or JNI_FALSE.
> ReleaseStringChars either frees the
> copy or unpins the instance, depending
> upon whether GetStringChars has
> returned a copy or not.
I am correct in assuming this is a bug in Gordon's book?

Let me use this small and simple sample:

    class Sample {
        private String msg = null;

        public void newmsg(String x){
            msg = x;
        }

        public String getmsg(){
            String temp = msg;
            msg = null;
            return temp;
        }
    }

Let&#39;s assume the function `newmsg()` is called by other threads that I don&#39;t have access to. 

I want to use the synchonize method to guarantee that the string `msg` is only used by one function per time. In other words, function `newmsg()` cannot run at the same time as `getmsg()`.

How to synchronize or lock upon variables in Java?

Can anyone tell me what&#39;s the advantage of `persist()` vs `save()` in Hibernate?

What&#39;s the difference between session.persist() and session.save() in Hibernate?

I seem to have problems with mapping a List&lt;String&gt; in Hibernate. In our project there a class `Card` with contains a class `Answer` with `Answer` containing a `List&lt;String&gt;`.

Is a `List&lt;String&gt;` mappable by Hibernate using annotations? I mean, since it does not have the `@Entity` annotation?

Regards

How to persist a List of Strings in Hibernate?

I need to read a large text file of around 5-6 GB line by line using Java.

How can I do this quickly?


How can I read a large text file line by line using Java?

How do you make [Selenium][1] 2.0 wait for the page to load?

  [1]: http://en.wikipedia.org/wiki/Selenium_%28software%29


Wait for page load in Selenium

I&#39;m working on a Java project that uses the JNI.  The JNI calls a custom library that I&#39;ve written myself, let&#39;s say mylib.dll, and that depends on a 3rd party library, libsndfile-1.dll.

When I run my program it crashes with 

    java.lang.UnsatisfiedLinkError:  C:\...path...\mylib.dll: Can&#39;t find dependent libraries.

I&#39;ve searched this site (and others) and I&#39;ve tried a number of fixes:

1. I ran dependency walker. DW gave a couple of warnings -- that two libraries required by libsndfile, MPR.DLL and SHLWAPI.DLL, had &quot;unresolved imports&quot; -- but the [DW FAQ][1] said that these warnings could be safely ignored. 

2. I fixed the method names in mylib.dll, as suggested [here][2].  The method names had somehow gotten mangled by the compiler, but I added linker flags and the dll method names now match those in my jni header file exactly.

3. I put all of these DLLs in the same directory -- the same directory as the .jar that calls them -- to ensure that they&#39;re on the right PATH.

No dice.

Does anyone have any idea what&#39;s going on?

I&#39;m doing my development in Visual Studio 2010 on a MacBook pro (via Parallels). I&#39;m doing my testing in Windows XP on a toshiba laptop.


  [1]: http://www.dependencywalker.com/faq.html
  [2]: http://witte-consulting.com/blog/jni-java-native-interface-exception-in-thread-main-javalangunsatisfiedlinkerror-can-t-find-dependent-libraries/

How to fix an UnsatisfiedLinkError (Can&#39;t find dependent libraries) in a JNI project

While playing [this puzzle][1] (It&#39;s a Java keyword trivia game), I came across the `native` keyword.

What is the native keyword in Java used for?


  [1]: http://www.sporcle.com/games/robv/java_keywords

What is the native keyword in Java for?

While there is documentation regarding turning a `jstring` to a native string (`string nativeString = env-&gt;GetStringUTFChars(jStringVariable, NULL);`)  I can&#39;t find an example which will convert a `jboolean` to a `bool` or a `jint` to an `int`. 

Can anyone suggest how this is achieved? 

Convert JNI types to Native types

I need to implement some functions into an Android application using NDK and thus JNI.

Here&#39;s the C code, with my concerns, that I wrote:

    #include &lt;jni.h&gt;
    #include &lt;stdio.h&gt;
    	
    jobject
    Java_com_example_ndktest_NDKTest_ImageRef(JNIEnv* env, jobject obj, jint width, jint height, jbyteArray myArray)
    {
    	jint i;
    	jobject object;
    	jmethodID constructor;
    	jobject cls;
    	cls = (*env)-&gt;FindClass(env, &quot;com/example/ndktest/NDKTest/Point&quot;);

    //what should put as the second parameter? Is my try correct, according to what
    //you can find in .java file? I used this documentation: http://download.oracle.com/javase/6/docs/technotes/guides/jni/spec/functions.html#wp16027

    	constructor = (*env)-&gt;GetMethodID(env, cls, &quot;&lt;init&gt;&quot;, &quot;void(V)&quot;);
    //http://download.oracle.com/javase/6/docs/technotes/guides/jni/spec/functions.html#wp16660
    //Again, is the last parameter ok?

    	object = (*env)-&gt;NewObject(env, cls, constructor, 5, 6);
    //I want to assign &quot;5&quot; and &quot;6&quot; to point.x and point.y respectively.
       	return object;
    }    
My problems are more or less explained inside the code. Maybe also: is the return type of the function (jobject) ok?

Now the NDKTest.java:

    package com.example.ndktest;
    
    import android.app.Activity;
    import android.widget.TextView;
    import android.os.Bundle;
    
    public class NDKTest extends Activity {
        /** Called when the activity is first created. */
    	public native Point ImageRef(int width, int height, byte[] myArray);
    	public class Point
    	{
    		
    		Point(int myx, int myy)
    		{
    			x = myx;
    			y = myy;
    		}
    		
    		int x;
    		int y;
    	}
    	
        @Override
        public void onCreate(Bundle savedInstanceState)
        {
        	
        	 super.onCreate(savedInstanceState);
             TextView tv = new TextView(this);
             byte[] anArray = new byte[3];
             for (byte i = 0; i &lt; 3; i++)
            	 anArray[i] = i;
             Point point = ImageRef(2, 3, anArray);
             tv.setText(String.valueOf(point.x));
             	setContentView(tv);     
        }
        
        
        
        static
        {
           System.loadLibrary(&quot;test&quot;);
        }
    }

When I try to run the code, it doesn&#39;t work.

How to create an object with JNI?

When I try opening [Eclipse][1], a pop-up dialog states:

&gt; Failed to load the JNI shared library &quot;C:/JDK/bin/client/jvm.dll&quot;`.

Following this, Eclipse force closes.

Here&#39;s a few points I&#39;d like to make:  

 - I checked to see if anything exists at that path. It does exist.  
 - My Eclipse and [Java SE Development Kit][2] are both 64-bit. I checked my system, and it can handle 64-bit.  
 - I&#39;ve searched for this problem on Google and on Stack&amp;nbsp;Overflow, and the only answer I found was to download the 32-bit versions of JDK and Eclipse.

Downloading the 32-bit versions is something I only want to do as a very last resort.   
What would be suggested to solve this issue?

  [1]: http://www.eclipse.org/
  [2]: http://www.oracle.com/technetwork/java/javase/overview/index.html


Content Type	Original Author	Original Content on Stackoverflow
Question	Edward Loper	View Question on Stackoverflow
Solution 1 - Java	Brett Kail	View Answer on Stackoverflow

Should you call ReleaseStringUTFChars if GetStringUTFChars returned a copy?

Java Problem Overview

Java Solutions

Solution 1 - Java

Inline block doesn't work in internet explorer 7, 6

How to get diff between all files inside 2 folders that are on the web?

Attributions