error: Source option 5 is no longer supported. Use 6 or later

[Mohsen Pahlevanzadeh]

Hello,

I use the following java version:

% javac --version
javac 10.0.1

Now When I use `ant` or `ant compile` command I get the following errors:

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Buildfile: /home/mohsen/src-compiled/zekr/zekr-1.1.0+repack/build.xml

compile:
    [javac] /home/mohsen/src-compiled/zekr/zekr-1.1.0+repack/build.xml:89: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 254 source files to /home/mohsen/src-compiled/zekr/zekr-1.1.0+repack/build/classes
    [javac] warning: [options] bootstrap class path not set in conjunction with -source 5
    [javac] error: Source option 5 is no longer supported. Use 6 or later.
    [javac] error: Target option 1.5 is no longer supported. Use 1.6 or later.

BUILD FAILED
/home/mohsen/src-compiled/zekr/zekr-1.1.0+repack/build.xml:89: Compile failed; see the compiler error output for details.

Total time: 0 seconds

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How can I solve it?

--mohsen