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.ValueObject	MATLAB value object	MATLAB value 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	com.mathworks.matlab.types.ValueObject	com.mathworks.matlab.types.ValueObject
Complex number	com.mathworks.matlab.types.Complex	com.mathworks.matlab.types.Complex[]
struct	com.mathworks.matlab.types.Struct	com.mathworks.matlab.types.Struct[]