Method Signatures and Parameter Modes (Java mapping)

Lesson 9	Method signatures and parameter modes
Objective	Describe Java mapping of type in method signature.

Method Signatures and Parameter Modes in Corba

As you have seen, the mapping of a parameter type is dependent on the IDL type of that parameter as well as the parameter passing mode of that parameter. To know what to expect from the IDL compiler, you should have a good handle on the possible combinations.
View the table below to see an illustration of the mapping from IDL to Java for each primitive type and parameter passing mode.
The columns for in and return are the same as are the columns for out and inout.

IDL	`in`	`out`	`Inout`	return
`short`	`short`	`ShortHolder`	`ShortHolder`	`short`
`long`	`int`	`IntHolder`	`IntHolder`	`int`
`long long`	`long`	`LongHolder`	`LongHolder`	`long`
`unsigned short`	`short`	`ShortHolder`	`ShortHolder`	`short`
`unsigned long`	`int`	`IntHolder`	`IntHolder`	`int`
`unsigned long long`	`long`	`LongHolder`	`LongHolder`	`long`
`float`	`float`	`FloatHolder`	`FloatHolder`	`float`
`double`	`double`	`DoubleHolder`	`DoubleHolder`	`double`
`char`	`char`	`CharHolder`	`CharHolder`	`char`
`wchar`	`char`	`CharHolder`	`CharHolder`	`char`
`string`	`java.lang.String`	`StringHolder`	`StringHolder`	`java.lang.String`
`wstring`	`java.lang.String`	`StringHolder`	`StringHolder`	`java.lang.String`
`boolean`	`boolean`	`BooleanHolder`	`BooleanHolder`	`boolean`
`octet`	`byte`	`ByteHolder`	`ByteHolder`	`byte`

In the next lesson, you will learn the mapping for attributes in IDL interfaces.