rJava: jnew – R documentation

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jnew

Create a Java object

.jnew create a new Java object.

.jnew(class, ..., check=TRUE, silent=!check, class.loader=NULL)

`class`	fully qualified class name in JNI notation (e.g. `"java/lang/String"`).
`...`	Any parameters that will be passed to the corresponding constructor. The parameter types are determined automatically and/or taken from the `jobjRef` object. For details see `.jcall`. Note that all named parameters are discarded.
`check`	If set to `TRUE` then `.jcheck` is invoked before and after the call to the constructor to clear any pending Java exceptions.
`silent`	If set to `FALSE` then `.jnew` will fail with an error if the object cannot be created, otherwise a null-reference is returned instead. In addition, this flag is also passed to final `.jcheck` if `check` above is set to `TRUE`. Note that the error handling also clears exceptions, so `check=FALSE, silent=FALSE` is usually not a meaningful combination.
`class.loader`	optional class loader to force for loading the class. If not set, the rJava class loader is used first. The default Java class loader is always used as a last resort. Set to `.rJava.class.loader` inside a package if it uses its own class loader (see `.jpackage` for details).

Returns the reference (jobjRef) to the newly created object or null-reference (see .jnull) if something went wrong.

## Not run: 
f <- .jnew("java/awt/Frame","Hello")
.jcall(f,,"setVisible",TRUE)

## End(Not run)

Low-Level R to Java Interface

v1.0-4

LGPL-2.1

Authors

Simon Urbanek <simon.urbanek@r-project.org>

Initial release