Processing internally used the Eclipse ecj compiler: The following code and command can reproduce the issue in combination with JDK 8 b119:
$ cat HelloWorld.java import java.util.HashMap; public class HelloWorld { public static void main(String[] args) { System.out.println("Hello World!"); } } #download the eclipse ecj version used internally by processing. wget https://github.com/processing/processing/raw/master/java/mode/ecj.jar tar zxvf jdk-8-ea-bin-b119-linux-i586-05_dec_2013.tar.gz ./jdk1.8.0/bin/java -jar ecj.jar -source 1.6 -classpath . -nowarn HelloWorld.java Annotation processing got disabled, since it requires a 1.6 compliant JVM ---------- 1. ERROR in HelloWorld.java (at line 1) import java.util.HashMap; ^ The type java.util.Map$Entry cannot be resolved. It is indirectly referenced from required .class files ---------- 1 problem (1 error) # The compilation succeed if ecj.jar is invoked without the -source 1.6 argument: ./jdk1.8.0/bin/java -jar ecj.jar -classpath . -nowarn HelloWorld.java ./jdk1.8.0/bin/java HelloWorld Hello World! https://bugs.openjdk.java.net/browse/JDK-8024935 - compilation succeeds in java7 but fails in java8 I do not have any account at bugs.openjdk.java.net that I can use to update this bug, feel free to attach the information above to the bug. Cheers Xerxes 2013-12-13 17:07, Balchandra Vaidya skrev: > [cc'd compiler-...@openjdk.java.net] > > > On 12/13/13 12:00 PM, Balchandra Vaidya wrote: >> >> Hi Xerxes, >> >> Thank you for your feedback. I have updated the bug >> https://bugs.openjdk.java.net/browse/JDK-8024935 with >> your instruction to reproduce the issue below. >> >> >> Thanks, >> Balchandra >> >> >> On 12/13/13 11:20 AM, Xerxes Rånby wrote: >>> Processing 2.1 fails to compile all of its projects using JDK8 EA b119 >>> error: The type java.util.Map$Entry cannot be resolved. >>> >>> This issue is a reproducer/reduced test case for: >>> https://bugs.openjdk.java.net/browse/JDK-8024935 - compilation succeeds in >>> java7 but fails in java8 >>> >>> I do not have any account at bugs.openjdk.java.net that I can use to update >>> this bug, >>> feel free to attach the information below to the bug. >>> >>> steps to reproduce: >>> >>> #Download processing 2.1 from: >>> https://processing.org/download/ >>> >>> tar zxvf processing-2.1-linux32.tgz >>> cd processing-2.1 >>> #replace the bundled jdk inside processing with JDK8 EA b119 >>> mv java java-bundled >>> mv jdk1.8.0 java >>> #run >>> ./processing >>> >>> Press >>> Sketch->Run >>> without entering any code fails with the following output: >>> >>> Annotation processing got disabled, since it requires a 1.6 compliant JVM >>> /tmp/sketch_131213a3040094527895471164temp/sketch_131213a.java:1: error: >>> The type java.util.Map$Entry cannot be resolved. It is indirectly >>> referenced from required .class files >>> import processing.core.*; >>> ^ >>> 1 problem (1 error) >> >