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1. Top results related to where can i find java source code?

   • Where can I find the Java JDK source code?

     Top Answer

     Answered Jul 09, 2015 · 128 votes

     You haven't said which version you want, but an archive of the JDK 8 source code can be downloaded here, along with JDK 7 and JDK 6.

     Additionally you can browse or clone the Mercurial repositories: 8, 7, 6.

     Other Answers

     Answered Aug 27, 2021 · 39 votes

     Chances that you already got the source code with the JDK, is a matter of finding where it is. In that case, the JDK folder doesn't contain the source code:

     sudo apt-get install openjdk-7-source

     OS X folks, search in Homebrew formulas.

     In Ubuntu, the command above would put your source file under:

     /usr/lib/jvm/openjdk-7/

     The good news is that Eclipse will take you there already (how to bind Eclipse to the Java source code):

     Follow the orange buttons

     Other Answers

     Answered Aug 27, 2021 · 18 votes

     Sadly, as of this writing, despite their own documentation readme, there is no src.zip in the JDK 7 or 8 install directories when you download the Windows version.

     Note: perhaps this happens because many of us don't actually run the install .exe, but instead extract it. Many of us don't run the Java install (the full blown Windows install) for security reasons...we just want the JDK put someplace out of the way where potential viruses cannot find it.

     But their policy regarding the Windows .exe (whatever it truly is) is indeed nuts, however, the src.zip DOES exist in the Linux install (a .tar.gz). There are multiple ways of extracting a .tar and a .gz, and I prefer the free "7Zip" utility.

     • download the Linux 64 bit .tar.gz
     • use 7-Zip to uncompress the .tar.gz to a .tar
     • use 7-Zip to extract the .tar to the installation directory
     • File src.zip will be waiting for you in that installation directory.
     • pull it out and place it where you like.

     Oracle, this is really beyond stupid.

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     1/5

   • Where can I find the Java source code for the Vigenere cipher?

     Top Answer

     Answered Apr 23, 2015 · 12 votes

     This is Vigenere cipher Class, you can use it, just call encrypt and decrypt function : The code is from Rosetta Code.

     public class VigenereCipher { public static void main(String[] args) { String key = "VIGENERECIPHER"; String ori = "Beware the Jabberwock, my son! The jaws that bite, the claws that catch!"; String enc = encrypt(ori, key); System.out.println(enc); System.out.println(decrypt(enc, key)); } static String encrypt(String text, final String key) { String res = ""; text = text.toUpperCase(); for (int i = 0, j = 0; i < text.length(); i++) { char c = text.charAt(i); if (c < 'A' || c > 'Z') continue; res += (char)((c + key.charAt(j) - 2 * 'A') % 26 + 'A'); j = ++j % key.length(); } return res; } static String decrypt(String text, final String key) { String res = ""; text = text.toUpperCase(); for (int i = 0, j = 0; i < text.length(); i++) { char c = text.charAt(i); if (c < 'A' || c > 'Z') continue; res += (char)((c - key.charAt(j) + 26) % 26 + 'A'); j = ++j % key.length(); } return res; }}

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     2/5

   • Where can I find the source code for Java arrays?

     Top Answer

     Answered Oct 19, 2010 · 14 votes

     Have a look at this for an explanation. But basically the array type is built-in to the jvm and you need to analyze the source code for the jvm you are running in order to truly know how it works.

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     3/5

   • Where can I find the source code for Java's Square Root function?

     Top Answer

     Answered Jun 20, 2020 · 39 votes

     When you install a JDK the source code of the standard library can be found inside src.zip. This won't help you for StrictMath, though, as StrictMath.sqrt(double) is implemented as follows:

     public static native double sqrt(double a);-

     So it's really just a native call and might be implemented differently on different platforms by Java.

     However, as the documentation of StrictMath states:

     To help ensure portability of Java programs, the definitions of some of the numeric functions in this package require that they produce the same results as certain published algorithms. These algorithms are available from the well-known network library netlib as the package "Freely Distributable Math Library," fdlibm. These algorithms, which are written in the C programming language, are then to be understood as executed with all floating-point operations following the rules of Java floating-point arithmetic.

     The Java math library is defined with respect to fdlibm version 5.3. Where fdlibm provides more than one definition for a function (such as acos), use the "IEEE 754 core function" version (residing in a file whose name begins with the letter e). The methods which require fdlibm semantics are sin, cos, tan, asin, acos, atan, exp, log, log10, cbrt, atan2, pow, sinh, cosh, tanh, hypot, expm1, and log1p.

     So by finding the appropriate version of the fdlibm source, you should also find the exact implementation used by Java (and mandated by the specification here).

     The implementation used by fdlibm is

     static const double one = 1.0, tiny=1.0e-300;-double z;int sign = (int) 0x80000000; unsigned r, t1, s1, ix1, q1;int ix0, s0, q, m, t, i;ix0 = __HI(x); /* high word of x */ix1 = __LO(x); /* low word of x *//* take care of Inf and NaN */if ((ix0 & 0x7ff00000) == 0x7ff00000) { return x*x+x; /* sqrt(NaN) = NaN, sqrt(+inf) = +inf, sqrt(-inf) = sNaN */} /* take care of zero */if (ix0 <= 0) { if (((ix0&(~sign)) | ix1) == 0) { return x; /* sqrt(+-0) = +-0 */ } else if (ix0 < 0) { return (x-x) / (x-x); /* sqrt(-ve) = sNaN */ }}/* normalize x */m = (ix0 >> 20);if (m == 0) { /* subnormal x */ while (ix0==0) { m -= 21; ix0 |= (ix1 >> 11); ix1 <<= 21; } for (i=0; (ix0&0x00100000)==0; i++) { ix0 <<= 1; } m -= i-1; ix0 |= (ix1 >> (32-i)); ix1 <<= i;}m -= 1023; /* unbias exponent */ix0 = (ix0&0x000fffff)|0x00100000;if (m&1) { /* odd m, double x to make it even */ ix0 += ix0 + ((ix1&sign) >> 31); ix1 += ix1;}m >>= 1; /* m = [m/2] *//* generate sqrt(x) bit by bit */ix0 += ix0 + ((ix1 & sign)>>31);ix1 += ix1;q = q1 = s0 = s1 = 0; /* [q,q1] = sqrt(x) */r = 0x00200000; /* r = moving bit from right to left */while (r != 0) { t = s0 + r; if (t <= ix0) { s0 = t+r; ix0 -= t; q += r; } ix0 += ix0 + ((ix1&sign)>>31); ix1 += ix1; r>>=1;}r = sign;while (r != 0) { t1 = s1+r; t = s0; if ((t<ix0) || ((t == ix0) && (t1 <= ix1))) { s1 = t1+r; if (((t1&sign) == sign) && (s1 & sign) == 0) { s0 += 1; } ix0 -= t; if (ix1 < t1) { ix0 -= 1; } ix1 -= t1; q1 += r; } ix0 += ix0 + ((ix1&sign) >> 31); ix1 += ix1; r >>= 1;}/* use floating add to find out rounding direction */if((ix0 | ix1) != 0) { z = one - tiny; /* trigger inexact flag */ if (z >= one) { z = one+tiny; if (q1 == (unsigned) 0xffffffff) { q1=0; q += 1; } } else if (z > one) { if (q1 == (unsigned) 0xfffffffe) { q+=1; } q1+=2; } else q1 += (q1&1); }}ix0 = (q>>1) + 0x3fe00000;ix1 = q 1>> 1;if ((q&1) == 1) ix1 |= sign;ix0 += (m <<20);__HI(z) = ix0;__LO(z) = ix1;return z;

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     4/5

   • Where can I find the source code of the "build" classes in Java?

     Top Answer

     Answered Jan 27, 2010 · 2 votes

     Do you have access to an IDE (such as Eclipse or Intellij) ? It will help enormously with navigating around your code, and that of the JDK. If you're not using one already I'd strongly recommend it.

     For your particular question, the awt classes are part of the JDK package. You'll need the JDK source code. You can download version 6 source code here.

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     5/5

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2. stackoverflow.com › questions › 2896727Where can I find the Java JDK source code? - Stack Overflow

   stackoverflow.com › questions › 2896727

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   4. In JDK 8, the source can be found in <JDK installation directory>/src.zip. Now in some intermediate releases this ZIP file was missing, but again it is available. Make sure that you select the source as well from the installation wizard. edited Aug 27, 2021 at 23:30.

   Usage example

   sudo apt-get install openjdk-7-source

   See more on stackoverflow

3. www.codewithfaraz.com › article › 13150 Java Projects with Source Code for All Skill Levels

   www.codewithfaraz.com › article › 131

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   Feb 26, 2024 · Source Code. Click Here. The Breakout Game project is an exhilarating Java application that challenges players to smash through rows of bricks using a bouncing ball and a paddle. This project offers programmers an opportunity to apply their Java skills while recreating the timeless and addictive gameplay of Breakout.

4. www.reddit.com › r › MinecraftIs there a way to see Minecraft’s source code? - Reddit

   www.reddit.com › r › Minecraft

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   I finished a java programming class and I was wondering if there was anyway i could access the code of Minecraft to see what they did, is there? Archived post. New comments cannot be posted and votes cannot be cast.

5. www.sitepoint.com › 7-places-to-find-the-code-you-need7 Places to Find the Code You Need — SitePoint

   www.sitepoint.com › 7-places-to-find-the-code-you-need

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   There are several websites where you can find professional sample code. Some of the top ones include GitHub, Stack Overflow, CodePen, and SourceForge. These platforms have a vast collection of ...

6. askubuntu.com › questions › 64163Where are Java JDK Sources? - Ask Ubuntu

   askubuntu.com › questions › 64163

   • Cached

   Oct 4, 2011 · First of all, about java.util.LinkedList source: you can view it here or here, for example. Then, aren't you looking for openjdk-7-source or sun-java6-source packages? If not (may you prefer a Mercurial checkout or a tarball way or just want the most up-to-date sources), maybe this is what are you looking for?:

7. People also ask

   Where do I find Java source code?

   • The Java source code for all the API classes is shipped in the JDK installer in a file named src.zip. It's often just sitting in your install directory. Unzip it, and have a look. If it's not there, you may have chosen not to install it; reinstall the JDK and watch for the "source code" option, making sure to include it.

   view java source code - Stack Overflow

   stackoverflow.com/questions/6288377/view-java-source-code

   See all results for this question

   Where can I find Java projects?

   • Beginners can find Java projects on platforms like GitHub, CodeProject, and tutorial websites catering specifically to novice programmers. Q2. How do Java projects help in learning programming?

   50 Java Projects with Source Code for All Skill Levels

   www.codewithfaraz.com/article/131/explore-50-java-projects-with-source-code-for-all-skill-levels

   See all results for this question

   Where can I find a JDK source file?

   • In JDK 8, the source can be found in <JDK installation directory>/src.zip. Now in some intermediate releases this ZIP file was missing, but again it is available. Make sure that you select the source as well from the installation wizard.

   Where can I find the Java JDK source code? - Stack Overflow

   stackoverflow.com/questions/2896727/where-can-i-find-the-java-jdk-source-code

   See all results for this question

   Where can I find a sample code?

   • There are several websites where you can find professional sample code. Some of the top ones include GitHub, Stack Overflow, CodePen, and SourceForge. These platforms have a vast collection of code snippets and projects shared by developers worldwide.

   7 Places to Find the Code You Need — SitePoint

   www.sitepoint.com/7-places-to-find-the-code-you-need/

   See all results for this question

8. medium.com › javarevisited › how-to-extract-theHow to Extract the Source Code of a Java Application ☕

   medium.com › javarevisited › how-to-extract-the

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   Nov 22, 2021 · An example of the content of a class file. If you look at the same file with your IDE, some of them, like Intellij IDEA, can even decompile this type of file for you! 😮. If you look at the ...

9. askubuntu.com › questions › 157904Where do I get source code for the Java APIs? - Ask Ubuntu

   askubuntu.com › questions › 157904

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   Jul 3, 2012 · 2. To get the source code, run (as a regular user, not root) apt-get source openjdk-7-jre. It will download the source tree used to generate all the openjdk-7 packages. It downloads it to your current directory, so you may want to run something like mkdir -p ~/src && cd ~/src first.