Java Source code not showing (IntelliJ?)

Question

I'm using IntelliJ and developing code using Java.

When I use "Go to Declaration" [Ctrl+B] to a Java inbuilt feature (e.g. ArrayList), it takes me to that class (e.g. ArrayList.class) and looks a bit like this:

// IntelliJ API Decompiler stub source generated from a class file  
// Implementation of methods is not available

package java.util;

public class ArrayList <E>  extends java.util.AbstractList<E>
implements java.util.List<E>, java.util.RandomAccess,
java.lang.Cloneable, java.io.Serializable {

private static final long serialVersionUID = 8683452581122892189L;
private static final int DEFAULT_CAPACITY = 10;
private static final java.lang.Object[] EMPTY_ELEMENTDATA;
private transient java.lang.Object[] elementData;
private int size;
private static final int MAX_ARRAY_SIZE = 2147483639;

public ArrayList(int i) { /* compiled code */ }

public ArrayList() { /* compiled code */ }

public ArrayList(java.util.Collection<? extends E> es) { /* compiled code */ }

However I seen it on other computer and it actually shows the Java source, not just a comment saying "compiled code".

How do I get this on my computer. Have I set up Java incorrectly?

Daniel Kaplan · Accepted Answer · 2014-03-27 17:40:16Z

10

You should be able to configure it in your project structure (ctrl + alt + shift + S) settings here:

enter image description here

Is your JDK pointing to an invalid Sourcepath?

answered Mar 27, 2014 at 17:40

Daniel Kaplan

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7 Comments

Yahya Uddin Over a year ago

I don't seem to have that src.zip folder? How do I get it. Did I install wrong or do I need to install something additional? Currently there's nothing there for my sourcepath

fge Over a year ago

@YahyaUddin what JDK are you using? OpenJDK? Another one? How did you install it?

Yahya Uddin Over a year ago

I'm using the JDK on the Oracle offical site: jdk1.7.0_40. It's not OpenJDK.

Daniel Kaplan Over a year ago

@YahyaUddin are you sure you got the JDK and not the JRE? I downloaded mine the same way.

Yahya Uddin Over a year ago

Thanks a lot! I used the new JDK 8 and it included the src and it work fine. Many Thanks!!!

|

Community · Accepted Answer · 2017-04-13 12:22:39Z

2

I'm on Ubuntu 16.04 and OpenJDK 8. To get the JDK sources I had to separately install an additional package:

sudo apt-get install openjdk-8-source

Thanks to https://askubuntu.com/questions/755853/how-to-install-jdk-sources for the solution.

edited Apr 13, 2017 at 12:22

CommunityBot

11 silver badge

answered Nov 2, 2016 at 22:59

Stanislav Karakhanov

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2 Comments

mbruns42 Over a year ago

On arch linux it was 'yaourt -S openjdk8-src'

mbruns42 Over a year ago

I also had to go back to IntelliJ and under Settings > Platform Settings > SDKs > select my Java version > Sourcepath add '/usr/lib/jvm/java-8-openjdk'.

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