I have been getting an error when I try to compile my Java code.
'javac' is not recognized as an internal or external command, operable program or batch file.
My directory looks like this: Computer -> OS(C:) -> Program Files -> Java -> jdk1.8.0_60 -> Bin
When I type set path into CMD I get this: Path=file:///C:/Program%20Files/Java/jdk1.8.0_60/bin
My question is: Why isn't javac being recognized even after I have changed the path?
C:\Program Files (x86)\Java\jdk1.8.0_11\bin;
Note that your java is in Program Files (x86) not Program Files.
You should set path like this,
set path=C:\Program Files (x86)\Java\jdk1.8.0_11\bin
echo %path%
Moreover it will not set the path forever once you close the cmd the path you has set will just vanish. If you want to store the path in your system you should add your path to system's environment variable. You may find this helpful for adding environment variable.
First of all check whether your system is 64-bit or 32-bit windows. If it is 32-bit you are doing fine but if it is 64-bit you need to download 64-bit version of jdk and when you install it the java bin should be available in program files not in program files(x86) then set the path from there.
Related
I have the JDK 10.0.2 installed, have the cmd opened in the folder of the class files of my program and try the command: javap Simulation.class .
I get the error that the command javap is not found. What do I do wrong?
You must have your $JAVA_HOME/bin directory added to system PATH for javap command to be available without it's absolute path.
Alternatively you can call javap using the absolute path:
/usr/lib/.../bin/javap Simulation.class
Assuming you are on Windows, check in your environment variable PATH whether path to Java executables is set.
Ex. If you have installed Java on path,say, C:\Program Files\Java\jdk-10
Then you have to add C:\Program Files\Java\jdk-10\bin to your PATH environment variable to be able to execute java commands from anywhere on command line.
References for Oracle Docs
https://docs.oracle.com/javase/10/install/installation-jdk-and-jre-microsoft-windows-platforms.htm#JSJIG-GUID-DAF345BA-B3E7-4CF2-B87A-B6662D691840
https://www.java.com/en/download/help/path.xml
On a sidenote, recommend you to move to Java 11 or 17 now that Java 10 is no longer supported. The above instructions would still remain same.
append $JAVA_HOME/bin to system $PATH variable. for example on linux
JAVA_HOME= "path of java installation on system"
export PATH = $JAVA_HOME/bin:$PATH
Open the control panel and type envir in search bar.
Click on edit the system environment variables.
Click on environment variables in the advanced system properties.
Click on path mentioned in user variables.
Edit the path, and click new and paste the path of java jdk.
In my system, the path is C:\Program Files\Java\jdk-17.0.2\bin, it could be different for your system.
Click ok, the problem must be solved now.
After setting up java path in environment variable option in
Advanced System Setting .
javac command shows "'javac' is not recognized as an internal or external command, operable program or batch file."
but after executing the command
C:\java files>set path=C:\Program Files (x86)\Java\jdk1.7.0\bin
javac works but again after reopening the Command Prompt
javac doesn't work. What is the problem whys is it occurring.
OS Windows 10 Enterprise
Java version 1.8.0_77.
P.S. java is working whereas javac is not working.
Check out this Oracle's tutorial
java path
try this it might solve your problem:
Go to MyComputer -> Properties -> Advance Systems Settings -> Environment Variables -> System Variables -> Path. In the last, give the semi column and paste your path for JDK
I am trying to set java path on my windows 8.1, and i installed jdk 8u 64 bit and in environmental variables under system variables there is no PATH found,so i incuded new path variable to set path for jdk and jre ,by copying the bin path of jdk C:\Program Files (x86)\Java\jdk1.8.0_40\bin and i appended jre path C:\Program Files (x86)\Java\jre1.8.0_40,but it doesnt work when i tried in command prompt by typing "java -version"
and "javac" it says that java is not a internal or external command. and i had a doubt that to run java through command prompt ,do we need any other installations like turbo c
please help me out to set path in my pc,i am a begginer of java
thank you
javac is not part of jre, but part of jdk. So have C:\Program Files (x86)\Java\jdk1.8.0_40\bin;C:\Program Files (x86)\Java\jre1.8.0_40\bin in the path. As Anand noted, the ; is missing as well.
This path is wrong -
C:\Program Files (x86)\Java\jdk1.8.0_40C:\Program F iles
(x86)\Java\jre1.8.0_40\bin
you need a ; in between the two different paths.
Try adding this instead -
C:\Program Files (x86)\Java\jdk1.8.0_40\bin;C:\Program F iles
(x86)\Java\jre1.8.0_40\bin
If you are trying to add the path in the user variables
JAVA_HOME=C:\Program Files\Java\jdk1.8.0_66
in the JAVA_HOME don't add any semicolan (;) and
path=C:\Program Files\Java\jdk1.8.0_66\bin;.;
in the path section end of the line add ;.; to consider all paths and save. Then try to restart system and open the command prompt and try to check
java -version
javac
JAVA_HOME AND PATH
What I'm trying to do is running a .java source by compiling and running it from command prompt (not using any IDE) using commands javac and java and the program connects with MySQL, so everytime I run the program from cmd, I need to specify path of the MySQL connector using -classpath switch of java. And entire command to run the program gets something like below:
java -class .;path/to/connector/mysql-connector.jar MySQLConnect
where I want it to be as simple as for other programs like java MySQLConnect
and it should run the program.
Is there any way I can add the connector's path to environment variables of Windows that java make use of it. I already tried by creating a new CLASSPATH variable in Windows environment variables and added absolute path of the connector with file name along, but that didn't worked.
Please provide me the workaround of this Windows and Ubuntu as well.
Thanks.
WIndows : Copy mysql-connector.jar to C:\Program Files\Java\jdk1.6.0\jre\lib\ext
and copy the same file to C:\Program Files\Java\jre1.6.0\lib\ext
go to My Computer -> Properties -> Advanced -> Environment Variables
Set these paths
JAVA_HOME
C:\Program Files\Java\jdk1.6.0
PATH
C:\Program Files\Java\jdk1.6.0\bin;
CLASSPATH
.;C:\Program Files\Java\jre1.6.0\lib\ext\mysql-connector.jar;.;
open a fresh command propmpt
type
java -version press Enter
WINDOWS
Go to My Computer -> Properties -> Advanced -> Environment Variables
then find CLASSPATH variable in System variables and click on edit to add your jar file there.
LINUX or MAC
In your shell use a variable CLASSPATH in your .bashrc or .profile to set a default class path.
Set classpath=%classpath%;location of mysql-connector with connector file name.jar. For example:
set classpath=%classpath%;D:\TECHNICAL\JAVA WORLD\JDBC\mysql-connector-java-5.1.18-bin.jar;
D:\TECHNICAL\JAVA WORLD\JDBC\ is the location of mysql-connector.
To set this path go to Advanced System Settings->Environment variables->User variables->CLASSPATH->Edit, then type set classpath=%classpath%;D:\TECHNICAL\JAVA WORLD\JDBC\mysql-connector-java-5.1.18-bin.jar; and finally press OK.
I have done in this style. After that, I got result of programs correctly. Then there is noCLassNotFoundException.
I downloaded this Java JDK and installed it.
But when I go to the command prompt to check the version, it says it's not recognized.
Is anyone else experiencing this issue with the latest Java?
I might not have installed the right version. I need the java that works with grails
C:\>java
'java' is not recognized as an internal or external command,
operable program or batch file.
C:\>java -version
'java' is not recognized as an internal or external command,
operable program or batch file.
C:\>
when i do a search on my computer for java, it does not find anything
Windows 2k8 R2 server-
For both java [-option] or %JAVA_HOME% to work in the command line you need the following:
In Control Panel->System and Security->System->Advanced system setting->Advanced->Environment Variables->System Variables
Edit the Path variable and add a ";" after the last value and add the the path to the Java bin directory:
e.g.- C:\Progra~2\Java\jre6\bin\
Add the JAVA_HOME Variable with the value set to the path for the java executable:
e.g.- C:\Progra~2\Java\jre6\bin\java.exe
Press simultaneously the "windows" and "pause" buttons on your keyboard, this will bring up the System Preferences dialog.
In the Advanced tab, find Environment Variables.
Then, in the User (upper) section, create or update the following two variables :
JAVA_HOME = where you put your JDK, eg. C:/Java/SDK
PATH = %JAVA_HOME%/bin
Close the dialogs.
Then, in a new command-line console, try "javac -version" and see if it's detected.
It's important that you use a new console, because environment variables are read only when the console is launched.
Java is typically installed (on Windows) as C:\Program Files\Java\jdk<version>
That installation directory has a subdirectory bin which you need to append to your PATH environment variable via the control panel. Then, the commands like java, javac etc. will be available on the command line.
BTW, the same is true for Grails.
Is the -version flag not recognized, or is the "java" command not recognized? One way to test this is just to type 'java' by itself and run it and see what happens.
If the command is not recognized, make sure that the JDK's install path is in your windows PATH. If not, you won't be able to use any of the java executables from the command prompt. Here's another link that may help out.
You need to manually add the path to javac.exe and java.exe to your operating system path. The Java installation program doesn't do that for you.
You most likely don't have java.exe in your system's PATH variable.
For Linux:
check $PATH and $JAVA_HOME. You can configure it in /etc/environment
From console you can check it like:
$ echo $PATH
For Windows:
My Computer -> Properties -> Advanced -> Environment Variables
Check there PATH.
From console you can check it like:
echo %PATH%
You should have a Java icon in Windows Control Panel. Locate the Java tab and click the View button. That will show you the path to the Java executables.
Last but not least, make sure you have restarted the computer so changes in the PATH variable can take effect.
You installed the JDK. Isn't java.exe part of the JRE? Do you have that installed?
Maybe your system variables in the environment variables are not set properly. Follow the steps in the link below. Finally, make sure the path component in system variables has only one JDK path. Delete other JDK paths that you won't use.
https://docs.oracle.com/javase/tutorial/essential/environment/paths.html
You might have installed a previous or older version of Java so you can just uninstall it and directly download JDK from Java JDK
I was also facing the same issue but when I downloaded and installed the latest version the issue was resolved.
Also uninstall any other Java versions which may be present in the program files.
To get to know other versions which may be present in your computer use Windows File Explorer to go to:
Files > Windows C > Program Files > Java
All the JDK and JRE you have will be listed there. Uninstall any other Java versions other than what you installed. And then make sure you have set the path variable of the JDK.
For me, it was incorrect line in the PATH
(1) Check PATH: Type "Edit System Environment Variables" on the search -> System Properties -> Advance -> Environment Variables -> System variables -> Path
(2) On the list, mine was C:\Program Files (x86)\Common Files\Oracle\Java\javapath so I just add \ at the end (the exe files in the javapath folder)
OS: Windows 10 64 bit
IF you set the PATH and it's not showing up in cmd when you run %PATH%, try restarting your computer.