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mpijavac — Open MPI compiler wrapper for Java. See also: `mpirun`. More information: <https://docs.open-mpi.org

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the mpijavac command: Open MPI compiler wrapper for Java. See also: mpirun. More information: <https://docs.open-mpi.org/en/main/features/java.html#building-java-mpi-applications>.

Solution

mpijavac — Open MPI compiler wrapper for Java. See also: mpirun. More information: <https://docs.open-mpi.org/en/main/features/java.html#building-java-mpi-applications>.

Compile a Java source file:

mpijavac {{path/to/source_file}}.java

Pass application-specific classpaths to compiler:

mpijavac -cp {{path/to/app}}.jar {{path/to/source_file}}.java

Show the flags necessary to build MPI Java applications:

mpijavac --showme

Show the flags necessary to compile MPI Java applications:

mpijavac --showme:compile

Show full invoked Java compiler command line:

mpijavac {{path/to/source_file}}.java --showme

Code Snippets

Compile a Java source file

mpijavac {{path/to/source_file}}.java

Pass application-specific classpaths to compiler

mpijavac -cp {{path/to/app}}.jar {{path/to/source_file}}.java

Show the flags necessary to build MPI Java applications

mpijavac --showme

Show the flags necessary to compile MPI Java applications

mpijavac --showme:compile

Show full invoked Java compiler command line

mpijavac {{path/to/source_file}}.java --showme

Context

tldr-pages: common/mpijavac

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