How to execute linux shell statement in java

If I wrote a script behind. Sh keep in sdcard in two parameters (assuming that the wording of a and b. / XXX.sh a b)
I want to use the java statement is executed inside linux shell script, it should be how to write ah?
. Process p1 = new ProcessBuilder ("sh", "/ mnt / sdcard / XXX.sh", "a", "b") start ();
Written on it?
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The following commands linux system