Water 5-System Interfaces-Water to Java

Contract
No input parameters.
Parameter kind	Default value	Type
Other keyed arguments	opt

Water Contract
<class java _interpreter =<ja.bsh.Interpreter/> _java_pkgname="java" _other_keyed =opt=wob="_add_to_environment" />

You can execute java source code using java which provides a water interface to a Java environment.

java.<execute> 3 < 4; </execute>

true

Make an instance of a Java environment and initialize some local variables to values computed by Water code, then call execute with that Java environment.

<set J = <java a=2 b=3.<plus 4/> /> />
J.<execute> a + b </execute>

set can add local variables to an existing instance of java.

<java/>.<set a=2 b=3/>

set_value is similar to set except that this allows you to set only one variable. However, unlike set , the name of that variable may be computed by arbitrary Water code.

<java/>.<set_value "foo" 22/>

<java a=3 b=4/>.<execute> a + b;</execute>

<java/>.<set a=3 b=4/>.<execute> a > b </execute>

false

If the source argument is present and called with a keyword, its value will be the string of Java code to execute.

java.<execute source="3 < 4"/>

true