Question

How can i get a java complier for linux and ubuntu?

Answer 1

@sasogeek @wio

Answer 2

google will help best
type in adobe

Answer 3

As root:

yum install java-1.7.0-openjdk java-1.7.0-openjdk-devel

I also have:

gcc-java

which is a Java frontend for gcc, so that standalone executables can be compiled. No jvm needed.

Answer 4

so i have to install java -1.7.0-openjdk java-1.7.0-openjdk-devel?
this will work for both? @rsmith6559

Answer 5

@Jaynator495

Answer 6

YUM is for Red Hat like distros if I recall correctly.
Ubuntu uses apt-get, the following commands work for installing JRE, and JDK.
```
sudo apt-get update
sudo apt-get install default-jre
sudo apt-get install default-jdk
```
After installing, you may want to check out ```java -version``` to know what version you are working with.

Answer 7

i should type this in terminal

Answer 8

Yup.

Answer 9

i gave the 1st command

Answer 10

i opened the link

Answer 11

now?

Answer 12

The program 'java' can be found in the following packages:
* default-jre
* gcj-4.8-jre-headless
* openjdk-7-jre-headless
* gcj-4.6-jre-headless
* openjdk-6-jre-headless
Try: sudo apt-get install <selected package>

Answer 13

Run the command:

sudo apt-get install default-jdk

Answer 14

look
Need to get 61.7 MB of archives.
After this operation, 106 MB of additional disk space will be used.
Do you want to continue? [Y/n]

Answer 15

Hit the 'y' key, and then hit enter.

Answer 16

okay

Answer 17

its showing that % symbol

Answer 18

so it should be 100% till then we have to wait right

Answer 19

Yup, currently it is fetching the files. Once that is done, it will install them.

Answer 20

okay
could you wait?

Answer 21

like if u r free then

Answer 22

ah i see u dont accept messages
you may be knowing java, python and all right

Answer 23

After the command finishes you will have the full featured Software Development Kit for Java. There really is not much else to it. There is not supposed to be any accept messages.

Answer 24

what will be the name of the application?

Answer 25

Adding debian:GTE_CyberTrust_Global_Root.pem
done.
Setting up libatk-wrapper-java (0.30.4-4) ...
Setting up libatk-wrapper-java-jni:amd64 (0.30.4-4) ...
Processing triggers for libc-bin (2.19-0ubuntu6.6) ...
Processing triggers for ca-certificates (20141019ubuntu0.14.04.1) ...
Updating certificates in /etc/ssl/certs... 0 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d....
done.
done.

Answer 26

now it shows the command again

Answer 27

To compile you can use:
javac filename.java

To run your Java program you can use:
java filename

Answer 28

so i should type the commands in terminal

Answer 29

or in pluma?

Answer 30

Well do you have Java source code to compile?

Answer 31

ah
im totally new to this

Answer 32

Oh, okay.

Well, javac is the java compiler, notice the c on the end of java which denotes that that command calls the Java compiler.

java is the command used to run Java programs, after they have been compiled.

Answer 33

okay
well javac will run the java commands right

Answer 34

When you say Java commands do you mean, compile the Java source code of a file, into a binary executable that you run, then yes.

Answer 35

yay
okay well how can i create a java file?

Answer 36

Do you mean create programs? Before that, you have to learn Java programming.

Answer 37

yeah
but where can i create so that i can use javac

Answer 38

Open up a text editor, write a simple, "Hello World" program in Java, save it as HelloWorld.java

Then go inside your terminal, locate where HelloWorld.java is, and cd into that directory, then run javac HelloWorld.java, which will compile your source code.

Answer 39

oh so i need text editor

Answer 40

Pluma will work?

Answer 41

Is Pluma a text editor? If so then yes, virtually any text editor works.

Answer 42

how ?
like i saved it on desktop
what should i type?
javac hello.java

Answer 43

What did you save it as?

Answer 44

Hello.java on desktop

Answer 45

cd ~/Desktop
javac Hello.java

Answer 46

no not working

Answer 47

What does it say?

Answer 48

javac: file not found: Hello.java

Answer 49

Did you cd into the directory where you saved the file?

Answer 50

well what does that mean?

Answer 51

Did you run this command:
cd ~/Desktop

cd means, change directory it is a command line way to switch between directories.

Answer 52

@rvc I have to go, hopefully in the mean time someone else can try to help you out. Good luck.

Answer 53

okay
thank you so much for help @Opcode