openjdk 1.7 in eclipse: operator is not allowed for source level below 1.7

Question

Eclipse gives me an error:

\'<>\' operator is not allowed for source level below 1.7 

I guess this is because it is not using java 1

Answer 1

I had the same problem, but with the - Compiler Compliance Level - Generated .class files compatibility - Source compatibility all already set to 1.7. I reselected 1.7 on all 3 and then Eclipse detected it, asked to rebuild and built my project successfully.

Answer 2

Window->Preferences->Java->Compiler

select 1.7 and hit okay.

If you are building automatically, it will require a full re-build.

Answer 3

right click on the error, choose quick fix, and select change JRE to 1.7

Answer 4

right click on Project - properties - Java Complier - Compiler compliance -set level 1.7

Answer 5

If you would like to stick with java 1.6, Search and replace <> with empty string. You'll get compiler warnings but the errors should go away.

Answer 6

In your project's preferences, you must set the compiler --source option to 1.7 and --target option to 1.7 also. There are dedicated option boxes for that.

Right-click on the project. Choose Properties. Choose Java Compiler on the left. Choose 1.7 for the Compiler Compliance level. If the 2 drop-downs below that aren't 1.7, uncheck Use default compliance settings and set those to 1.7.