Unsupported major.minor version 52.0

[Bhaskar13]

org/apache/solr/handler/component/QueryAutoFilteringComponent : Unsupported major.minor version 52.0

I am using solr 4.10.4

[detnavillus]

Hi Bhaskar - this looks to be a Java version issue not Solr. I am guessing that Solr 4.10.4 is running on Java 1.7 and you compiled the code in Java 1.8 - also make sure that you use the Solr4x version as there are API changes in 5.x

[Bhaskar13]

Thanks for your quick response :).

When I am running with the correct java version(javac 1.6.0_65) it gives 2 compile time errors on running the ant command.

compile:
[javac] Compiling 1 source file to /Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/build/java
[javac] /Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/src/main/java/org/apache/solr/handler/component/QueryAutoFilteringComponent.java:545: illegal start of type
[javac] FST.Arc scratchArc = new FST.Arc<>( );
[javac] ^
[javac] /Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/src/main/java/org/apache/solr/handler/component/QueryAutoFilteringComponent.java:795: illegal start of type
[javac] FST.Arc scratchArc = new FST.Arc<>( );
[javac] ^
[javac] 2 errors

Could you please help me out here

[GitNotify]

As Ted pointed out, Solr 4x requires Java 1.7, not 1.6

You should not have to re-compile if you downloaded a release if your
runtime environment is at least Java 1.7, although you certainly can
recompile if you want.

Best,
Erick

On Wed, Oct 28, 2015 at 5:45 AM, Bhaskar Singhal notifications@github.com
wrote:

Thanks for your quick response :).

When I am running with the correct java version(javac 1.6.0_65) it gives 2
compile time errors on running the ant command.

compile:
[javac] Compiling 1 source file to
/Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/build/java
[javac]
/Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/src/main/java/org/apache/solr/handler/component/QueryAutoFilteringComponent.java:545:
illegal start of type
[javac] FST.Arc scratchArc = new FST.Arc<>( );
[javac] ^
[javac]
/Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/src/main/java/org/apache/solr/handler/component/QueryAutoFilteringComponent.java:795:
illegal start of type
[javac] FST.Arc scratchArc = new FST.Arc<>( );
[javac] ^
[javac] 2 errors

Could you please help me out here

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[detnavillus]

Hi Bashkar

Java 6 is not supported (this is a generic syntax that came out in Java 7)

• the current version of java is 1.8 .

I would recommend that you update your JVM to Java 8 (jdk 1.8) if
possible. I have not compiled/tested the code in Java 1.6. I think that
the Lucene/Solr code in 4.10 is Java 1.7 so you should at least have that
version.

Ted

On Wed, Oct 28, 2015 at 8:45 AM, Bhaskar Singhal notifications@github.com
wrote:

Thanks for your quick response :).

When I am running with the correct java version(javac 1.6.0_65) it gives 2
compile time errors on running the ant command.

compile:
[javac] Compiling 1 source file to
/Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/build/java
[javac]
/Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/src/main/java/org/apache/solr/handler/component/QueryAutoFilteringComponent.java:545:
illegal start of type
[javac] FST.Arc scratchArc = new FST.Arc<>( );
[javac] ^
[javac]
/Users/mi0096/Desktop/syno_final/query-autofiltering-component/solr4.x/src/main/java/org/apache/solr/handler/component/QueryAutoFilteringComponent.java:795:
illegal start of type
[javac] FST.Arc scratchArc = new FST.Arc<>( );
[javac] ^
[javac] 2 errors

Could you please help me out here

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#1 (comment)
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[Bhaskar13]

we are using java 1.6 in Solr 4.10.4. Please see if you can compile it on java 1.6

[GitNotify]

Solr 4.x is not supported under Java 1.6, it requires Java 1.7 and will
compile/run under Java 1.8 as well.

On Wed, Oct 28, 2015 at 8:16 AM, Bhaskar Singhal notifications@github.com
wrote:

we are using java 1.6 in Solr 4.10.4. Please see if you can compile it on
java 1.6

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