A utility for compiling and running a single file Java program (for scripting)

jscript.sh

#!/bin/bash
# compile a java source file and run it
#
# two options:
# 1. Add to interactive environment
#
# > source jscript.sh.
# (or do the above in ~/.bashrc)
# to make the function jscript available eg.
# > jscript HelloWorld.java
#
# 2. run this script as an executable eg.
# > ./jscript.sh HelloWorld.java
#
function jscript {
    javac $1 && java $(echo $1 | sed 's/.java//') 
    rm -f $(echo $1 | sed 's/.java/.class/')
}

if [[ $_ = $0 ]]
then
    jscript $1
fi