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Jordan
Asked: 2012-02-02 05:31:18 +0800 CST

How to get the java compiler for ubuntu?

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I am in a Java class in my college right now, and we have to be able to compile java programs via the terminal. I would like to keep using my Ubuntu installation for it though. whenever I try to compile something on Ubuntu, nobody can read the program. Says something about it not being able to read the program. I have installed the "openjdk-7-jdk" program, which might be the issue. Any help is appreciated, thanks! On a side note, I would like to mention that I need to compile my programs on OS X Lion or Windows 7 in order to run them correctly...

Here is a picture of what I have downloaded and what I could download instead...

enter image description here

command-line java jdk

1 Answers

  1. Best Answer

    Chances are your colleagues are using Java 6. In that case, you have to install openjdk-6-jdk.

    Recall that single .java source files are compiled using:

    javac hello.java

    .class files are executed like:

    java Hello

    This expects a Hello.class file in the current directory. If you're working in a different directory, you need to set the -classpath (or -cp) option:

    java -cp /path/to/classes Hello
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