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Java Data Type Conversions

Pass Java Data to MATLAB

This table shows how the MATLAB^® engine API maps Java^® data types to MATLAB data types.

Java Type	MATLAB Type for Scalar Data	MATLAB Type for Array Data
`boolean`	`logical`	`logical`
`bytes`	`int8`	`int8`
`short`	`int16`	`int16`
`int`	`int32`	`int32`
`long`	`int64`	`int64`
`float`	`single`	`single`
`double`	`double`	`double`
`char`	`char`	`char`
`java.lang.String`	`string`	`string`
`com.mathworks.matlab.types.Struct`	`struct`	`struct`
`com.mathworks.matlab.types.Complex`	`double`	`double`
`com.mathworks.matlab.types.HandleObject`	MATLAB handle object	MATLAB handle object
`com.mathworks.matlab.types.CellStr`	`cellstr`	`cellstr`
Nonrectangular (jagged) array	N/A	`cell`

Pass MATLAB Data to Java

This table shows how the MATLAB engine API maps MATLAB data types to Java data types.

MATLAB Type	Java Type for Scalar Data	Java Type for Array Data
`logical`	`Boolean`	`boolean[]`
`int8`	`Byte`	`byte[]`
`uint8`	`Byte`	`byte[]`
`int16`	`Short`	`short[]`
`uint16`	`Short`	`short[]`
`int32`	`Integer`	`int[]`
`uint32`	`Integer`	`int[]`
`int64`	`Long`	`long[]`
`uint64`	`Long`	`long[]`
`single`	`Float`	`float[]`
`double`	`Double`	`double[]`
`char`	`String`	`String`
`string`	`String`	`String[]`
`cellstr`	`String`	`String[]`
Mixed cell array	N/A	`Object[]`
MATLAB handle object	`com.mathworks.matlab.types.HandleObject`	`com.mathworks.matlab.types.HandleObject`[]
MATLAB value object	Unsupported	Unsupported
Complex number	`com.mathworks.matlab.types.Complex`	`com.mathworks.matlab.types.Complex`[]
`struct`	`com.mathworks.matlab.types.Struct`	`com.mathworks.matlab.types.Struct`[]

Related Topics

Java Engine API Summary

MATLAB Documentation

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