Java JDK 1.0 (1996) • Hacker News Board

Re: Java JDK 1.0 (1996)

#21

Post by johnwheeler » Sat, May 15, 2021, 12:22 PM UTC

zozbot234 wrote: post #7

Note that this is under a proprietary license (see toplevel COPYRIGHT code). Given the rather messy history around the Java API, it might be legally problematic to look at this code.

I doubt Oracle is going to sue

Re: Java JDK 1.0 (1996)

#22

Post by rzzzt » Sat, May 15, 2021, 12:28 PM UTC

froh wrote: post #17

vbezhenar wrote: post #11

Earlier quoted context omitted.

int is signed.

on x86 and arm. not on s390.

In a Java Virtual Machine, it is a 32-bit signed value: https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-2.ht...

Re: Java JDK 1.0 (1996)

#23

Post by throwaway4good » Sat, May 15, 2021, 12:36 PM UTC

The network is the computer.

Re: Java JDK 1.0 (1996)

#24

Post by ape4 » Sat, May 15, 2021, 1:20 PM UTC

There is classes.zip with a warning not to unzip. Now it would be classes.jar

Re: Java JDK 1.0 (1996)

#25

Post by andrewshadura » Sat, May 15, 2021, 1:26 PM UTC

johnwheeler wrote: post #21

zozbot234 wrote: post #7

Note that this is under a proprietary license (see toplevel COPYRIGHT code). Given the rather messy history around the Java API, it might be legally problematic to look at this code.

I doubt Oracle is going to sue

I wouldn't at all be surprised if they did.

Re: Java JDK 1.0 (1996)

#26

Post by muizelaar » Sat, May 15, 2021, 1:37 PM UTC

An even earlier release is here: https://github.com/Marcono1234/HotJava-1.0-alpha/tree/master...

Re: Java JDK 1.0 (1996)

#27

Post by brabel » Sat, May 15, 2021, 1:38 PM UTC

unixhero wrote: post #9

fnord77 wrote: post #6

was expecting the actual vm source code, which I believe is written in C and is an engineering marvel. This looks like just the end user install package

Interesting! Well is the sourcecode for the Java JVM not open and available?

Yes, and it's available on GitHub now!

Here's the heap implementation, for example: https://github.com/openjdk/jdk/blob/master/src/hotspot/share...

The GraalVM is a Java implementation of the Java compiler and VM and it's also on GitHub: https://github.com/oracle/graal

Re: Java JDK 1.0 (1996)

#28

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Re: Java JDK 1.0 (1996)

#29

Post by chrisseaton » Sat, May 15, 2021, 1:55 PM UTC

fnord77 wrote: post #6

was expecting the actual vm source code, which I believe is written in C and is an engineering marvel. This looks like just the end user install package

The original JDK didn't have the kind of things you're probably thinking of when you talk about an engineering marvel, like the JIT and advanced GCs.

Re: Java JDK 1.0 (1996)

#30

Post by doggodaddo78 » Sat, May 15, 2021, 2:42 PM UTC

Before Swing.

Also, I wrote a themeable, JNI-using installer that ran a JRE from a CD-R. It was slow to load at first but it seemed impressive to users.