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NeXtMidas Training
Getting Started - Part 2
Advanced Results Parameters
Objects
The Invoke and New Commands
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- The
INVOKE and NEW commands
The INVOKE and NEW commands allow for complex Java object
manipulation.
NEW is used to create (construct) a Java object.
nM> new java.lang.Double("10.12345678901234567") D
nM> res d.getClass()
O: D.GETCLASS() = class java.lang.Double
INVOKE is used to call complex methods in a Java object.
nM> new java.lang.String("a string with more") str
nM> invoke ,,str.regionMatches(0,"a string",0,8)
Invoke: ANSWER = true
INVOKE and NEW can be very powerful tools for evaluating
and understanding how to use Java classes.
Java Experts Take Note: |
NeXtMidas automatically converts the arguments for INVOKE and
NEW from strings into objects. This creates a number of limitations:
- If multiple methods have the same name the "wrong" one may be called
(e.g.
setFoo(int) and setFoo(String) when
given 2 )
- It is not possible to use a
null since it is treated as
the string "null" .
- It is difficult to call a method that takes in an object array.
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