Re: Early Access builds of JDK 8u76 b02, JDK 9 build b100 & build b99 for JDK 9 with Project Jigsaw are available on java.net

[Rick Hillegas]

Hi Rory, Dalibor, Balchandra, and Muneer,

I have gotten the Derby build to work using the javac supplied by b100 
of java 9 (referenced below). I have tripped across the following problem:

If I use the java 9 javac to compile the attached program down to java 8 
byte code thusly...

    javac -source 1.8 -target 1.8 ByteBufferTest.java

...then the result runs fine under java 9 but fails under java 8 with 
the following error message:

Exception in thread "main" java.lang.NoSuchMethodError: 
java.nio.ByteBuffer.clear()Ljava/nio/ByteBuffer;
    at ByteBufferTest.main(ByteBufferTest.java:9)

Is there something special which I need to do in order to use the java 9 
javac to compile programs which will run under java 8?

Thanks,
-Rick

On 1/15/16 3:02 AM, Rory O'Donnell wrote:

Hi Rick,

Early Access b02 <https://jdk8.java.net/download.html> for JDK 8u76 is 
available on java.net, summary of  changes are listed here 
<http://download.java.net/jdk8u76/changes/jdk8u76-b02.html>.

Early Access b100 <https://jdk9.java.net/download/> for JDK 9 is 
available on java.net, summary of  changes are listed here 
<http://download.java.net/jdk9/changes/jdk-9+100.html>.

Early Access b99 <https://jdk9.java.net/jigsaw/> for JDK 9 with 
Project Jigsaw is available on java.net, summary of changes are listed 
here <http://download.java.net/jigsaw/archive/99/binaries/jdk-9+99.html> .

Dalibor and I will be at FOSDEM '16, Brussels 30 & 31 January, link to 
our presentation here. 
<https://fosdem.org/2016/schedule/event/preparing_for_jdk_nine/>
Let us know if you will be there, hopefully we can meet up !

Rgds,Rory

--
Rgds,Rory O'Donnell
Quality Engineering Manager
Oracle EMEA , Dublin, Ireland

import java.nio.ByteBuffer;

public class ByteBufferTest
{
  public static void main(String... args) throws Exception
  {
    ByteBuffer buffer = ByteBuffer.allocate(100);
    
    buffer.clear();
  }
}