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Справка Scilab >> Java from Scilab > jexists

jexists

Test if a Scilab Java Object is valid on the Java side

Calling Sequence

bool = jexists(obj)

Parameters

obj

A mlist typed _JObj or _JClass

bool

A boolean

Description

Returns true if the corresponding Java object is always valid. An object can be invalidated with jremove.

Examples

jimport java.lang.Double;
d = Double.new("1.23456");
jexists(d)
jremove d;
jexists(d) // Will fail

See Also

  • jremove — Remove a Java Object on the Java side

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.
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<< jenableTrace Java from Scilab jgetclassname >>

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Last updated:
Fri Apr 11 14:19:51 CEST 2014