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Справка Scilab >> Java из Scilab > jinvoke

jinvoke

Invoke a method of a Java object

Syntax

ret = jinvoke(object, methodName [, arg_1 [, arg_2...]])

Parameters

object

A mlist typed _JObj or _JClass or a Scilab variable

methodName

A string giving the method name

arg_i

A Scilab variable as method argument

Description

Invoke the Java method (static or not) called methodName of the given object. The result is returned as a mlist typed _JObj.

The polymorphism is handled in using Java Reflection and the autoboxing is handled too so ArrayList.add(1.234) or ArrayList.add("Hello") are allowed. If it exists a method Foo.bar(int), it is possible to write Foo.bar(123) even if 123 is a Scilab double but Foo.bar(double), if it exists, will be chosen.

Examples

jimport java.lang.System;
jimport java.awt.Color;
jimport java.lang.String;

// Non-static methods
jinvoke("Hello World !!", "length");
str = String.new("Hello");
jinvoke(str,"substring",1, 4)

// Static method
T = jinvoke(System, "getProperty", "java.version");

// Combine
c = jinvoke(Color, "decode", "123456");
cb = jinvoke(c, "brighter");

jcode = jinvoke(cb, "getRGB");

jremove System Color T c cb jcode;

See also

  • jautoUnwrap — Unwrap automatically returned values
  • jinvoke_db — Invoke a method of a Java object in using Java direct buffers

History

ВерсияОписание
5.5.0 Function introduced. Based on the 'JIMS' module. The main difference in the behavior compared to the JIMS module is that jautoUnwrap is enabled by default.
Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Tue Feb 14 15:13:38 CET 2017