Download java.nio package source code

Where can I find NIO source code? Any Java 5 version would be great.
This code is open source.
thanks!

Sun's NIO source can be downloaded from the JDK d/l page.
This IS NOT open source code, you have to agree to the license terms.
If you want open source code, check out the OpenJDK project at java.net

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Where to download java 5.0 source code

thx a lot

What do you mean "Java 5.0 source code"?
Source for the API libraries? It's in src.zip that's in the JDK download.
Source for the VM? It's available somewhere on the Java website.
Sample source code for you to learn from? Try google.

Package java.nio package does not exists

I am trying to move some steps in java environment.
I am using a Windows98 O.S.
I downloaded jdk1.3 for Windows from sun site and installed it in c:\jdk1.3.1_02
I have set path variable as .....;c:\jdk1.3.1_02\bin
I am trying to compile a java source including java.nio package.
What I do is:
javac example.java
What I get is:
package java.nio does not exists
I saw a lot of documentation about how to use java.nio but not how to link it.
Any help I appreciate.

Package java.nio is introduced with the version 1.4

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karnes wrote:
Looking for two zip files: j2sdk-1_4_2-src-scsl.zip & j2sdk-1_4_2-bin-scsl.zip. You say that: "You can get the src.zip which comes with the JDK", what JDK, give me the exact fully qualified JDK name.Those are for building the entire j2sdk distribution.
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Sorry for this requirement posted here.i want to know
where i can get the java virtual machine source
code.plz,tell me .thank in advance!!!Where you installed the JDK, there is a file named src.zip - hack away. That won't be the complete source though I believe - much of the VM is written in native code and those parts might only be in compiled form (DLLs).

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You are not suppose to see the source code without prior permission from the vendor.
If your question is about decompiling the java class, you can use jad (or ant other java decompilers). You can give a search in Google for java decompilers.
By the way, why do you want to see the implementation class?
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You can't see source code of this package.
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http://download-uk.oracle.com/docs/cd/B14099_17/bi.1012/b14048/pbr_evnt.htm

Java.nio package

Is there a good tutorial somewhere which explain in depth the new I/O package in JDK 1.4 java.nio?

And there is the JavaWorld article at:
http://www.javaworld.com/javaworld/jw-09-2001/jw-0907-merlin.html
but the example code they give is a little broken, and
the article is also a little confusing. But it can help a little.
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Hi
I am using nio package and create a java program for file locking (FileLocking.java).
Here is the sample
try {
file = new File("C:/acc.txt");
channel = new RandomAccessFile(file, "rw").getChannel();
     lock = channel.lock(0, Long.MAX_VALUE, true);
try {
          lock = channel.tryLock(0, Long.MAX_VALUE, true);
catch (OverlappingFileLockException e) {
return true;
using wsad 5.1 and jdk1.4 i compiled this program.
While executing i got the following runtime error..
java.lang.UnsupportedClassVersionError: FileLocking (Unsupported major.minor version 48.0)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:703)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:133)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:319)
     at java.net.URLClassLoader.access$400(URLClassLoader.java:92)
     at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:677)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:238)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:516)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:441)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:448)
Exception in thread "main"
Even if i try to recompile it in command prompt and run, i got the same error.
please suggest me how can i overcome this problem.

UnsupportedClassVersionError means that you are trying to execute a class for a newer version of the JVM on an older version of the JVM.
Version 48.0 is for Java 1.4, so you have compiled your class with JDK 1.4.
The computer you are trying to run the class on, has an older version of Java than 1.4 - check it!
Try recompiling your source files with the "-target" switch, for example if you're running on Java 1.3, try compiling with:
javac -target 1.3 ... FileLocking.java

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cheng (guest) wrote:
: Hi,
: I tried to find a way to hide all our application oracle
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You may be interested in what Quintessence Systems (Berkshire,
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Addressed at precisely this kind of problem area, we've
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Java 1.5 source code

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I have downloaded jdk-1_5_0-src-jrl.zip i e source code java 1.5 ,i just want to study source code,what i want is how the keywords public,private
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JoachimSauer wrote:
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Session session = Session.getDefaultInstance(props, null);
try Session.getInstance( props, null) instread.
I am trying to add the package javax.mail.* but is not allowin me to import this package in my source code.
copy mail.jar file to <your project>/lib folder and add this jar to java build path.
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karnes wrote:
Looking for two zip files: j2sdk-1_4_2-src-scsl.zip & j2sdk-1_4_2-bin-scsl.zip. You say that: "You can get the src.zip which comes with the JDK", what JDK, give me the exact fully qualified JDK name.Those are for building the entire j2sdk distribution.
In every j2sdk there is an src.zip with the Java source for all the core Java classes.

Download java.nio package source code

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