Use this command:
$ sudo update-alternatives --config java
You'll get a result similar to:
There are 3 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------...
@lyly Can you update your question with the text that you have in your image. I can't make out the exact response. If it were in text I could use Google's translator to better decipher the error response.
@lyly Try first selecting 0 and 2 and see if it changes. Make sure (which I understand that you're doing) that you use the elevated sudo prefix to your command.
I have already had my teacher has to prblm rrivé to change the version with a method that I forgot that she parcque chnage not and I do not remember how he blocked ss I do I have switched this version please help me james
@james jet same problem Java 6 has been removed I have Tappe sudo update-alternatives --config java I board selected 1 to 8 java then when I type java -version No such file or dirctory
@lyly I don't know if you're saying the alternative method is working. If you are still having problems, I'll need to see the output of the command I gave you. Are you still having problems?
sorry when I type sudo update-alternatives --config java there are two choices for the alternative java (which provides / user / bin / java) selction the way state priority 0 / user / lib / jvm / java-8-oracle / jre / bin / java 1075 automatic / User / lib / jvm / java-7-oracle / jre / bin / java 1074 manual / User / lib / jvm / java-8-oracle / jre / bin / java 10755 manual
@lyly Ok. So the next step is to install the version that you want to run. I'll add the command for the installation to my answer. Give me a couple minutes to format it easy to read.
@lyly Which version of Ubuntu are you running? 16.04?
@lyly The same way I edited my answer. Will you edit your question? Run this command: sudo update-alternatives --config java Copy and paste what you get in the terminal screen to your question. So that I can see the exact output. This is similar to the original picture that you posted. Paste it to your question.
when I type sudo update-alternatives --config java there are two choices for the alternative java (which provides / user / bin / java) selction the way state priority 0 / user / lib / jvm / java-8-oracle / jre / bin / java 1075 automatic / User / lib / jvm / java-7-oracle / jre / bin / java 1074 manual / User / lib / jvm / java-8-oracle / jre / bin / java 10755 manual
when I type sudo update-alternatives --config java there are two choices for the alternative java (which provides / user / bin / java) selction the way state priority 0 / user / lib / jvm / java-8-oracle / jre / bin / java 1075 automatic / User / lib / jvm / java-7-oracle / jre / bin / java 1074 manual / User / lib / jvm / java-8-oracle / jre / bin / java 10755 manual
I can't make out the text in the comment. This what you just pasted here, click on edit to where you typed your original question. Paste it there. It'll make it easy for me to read and see what teh problem is. I believe it'll take just minutes after I can see this text in your question.
@lyly If you can't copy and paste the text. Paste another image and I'll see what is happening from there.
@lyly I will be able to see from the text which java is selected, or I will be able to understand what error is happening if I can see the exact text that comes on your screen when you type in the command.
@lyly What you put there is something that you typed. Look at what is in my answer how the output looks. Did you use the copy and paste command so that you could have the output exactly the way it was on your screen? What I'm looking at won't work.
@lyly Also, I believe there is a problem with your Java installation. I was hoping to look at the exact output to help identify the problem. But if you would remove versions 7 and 8, then use the command I gave you in the answer (as well as in the link I provided), I'm sure the problem would be resolved. I would hope to see the exact output so that I can see where the * is on the your screen.
@I would recommend that you not post a duplicate question with the same problem. That is strictly against the rules. There already are two answers to your question here. You have to be patient and sometimes wait a day or so for the best answer.
@lyly Yes. I didn't down-vote your question, but I knew it would be down-voted because as I mentioned, duplicating questions is strictly against the rules. I adding formatting to my answer that might make it easier for you to follow. I added clarification to make it ease for others having a similar problem. I believe there was something wrong with your original installation.
@james not because I know which version is supported scala I want to try java7 with scala 2.11.6 if it works I will not use java 8 below for that I want kept the two versions
@lyly You are having problems with what you have installed. After you remove the ones that are not working, you can install them again one by one and have all the versions you want, version 7, version 8. Once you perform the installation, each one will work perfectly and be selectible.
@lyly It seems like you're doing something different than just removing java7 and java8. You may cause other problems if you do something different from the two steps I provided.
When you say download Java 7, it appears that you're doing something different from what is in the answer. This is the problem. If you will remove the java versions that you have on your system with the steps I provide, I'll also give you the very simple steps to install the versions you want on your system.
Can you give me the output of this command?
apt-cache search "^oracle.*java"
This can all be done in about 6 steps. The first steps is the output of this command:
Okay... that's our first problem. Now I'm going to give you the commands from the answer, one by one. It's very important that you type in the commands provided:
Put the cursor over the text and drag it so that you select the text. Right click, then click copy. Then right click on the chat box and paste it here.
@lyly For your information, you can use @L. D. James to get a message to me by typing in this chat. If I hadn't been at the screen I would not have gotten this message. That also goes for other users. Hit the @ and their user name will give them a notice when they get a message.
@lyly When you get a chance please answer the last question... the two commands, or advise if you are having problems with them.
@lyly "@james" doesn't work. Try "@L. D. James" That will give me a notice when you have typed something to me. It doesn't matter when I'm looking at the screen. But if I don't see the screen, I'll get a notice if you use "@L. D. James"
When you type "@L" The system will show you the other letters and you can click on my userID.
@lyly By the way, I made a mistake and placed spaces in my userID. When you get a chance can you test it without the spaces: "@L.D.James" I didn't get the notice.
@lyly I got that notice. Now if I'm not looking at the screen or if it's not up, I'll get a notice.
That wasn't the command I just gave you, but that helps.
I understand what you are saying. You have a faulty installation. I'm giving you the steps to resolve the problem that you are having. I mentioned yesterday, about 6 commands and your issues will be resolved.
Reading package lists ... Done Shaft Construction dependencies Reading state information ... Done The following NEW packages will be installed: oracle-jdk7-install 0 upgraded, 1 newly installed, 0 to remove and 703 not upgraded. It is necessary to 4306 o the archives. After this operation 28.7 kB of additional disk space will be used. Reception: 1 http://ppa.launchpad.net/webupd8team/java/ubuntu/ trusty / main oracle-jdk7-install all 7u80 + 7u60arm-0 ~ WebUpd8 ~ 1 [4306 B] 4306 o approved in 1s (3468 o / s)
Use this command:
$ sudo update-alternatives --config java
You'll get a result similar to:
There are 3 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------...
Click on the bold words "How can I select a certain version of Java?". It'll take you to the answer. You'll see a check grey check mark on the left. When you click it it'll turn green.
@lyly If you provide a link to a question that you have asked that you are having problems with I'll look at it and try to assist in that question. We can close this chat as having this issue resolved. This way it'll be easier for others to see the full resolution and details of the fix.
Discussion on answer by L. D. James: …
Discussion on answer by L. D. James: …