Description

Process information from a matlab.exception.JavaException object to handle Java^® errors thrown from Java methods called from MATLAB^®. This class is derived from MException.

Construction

e = matlab.exception.JavaException(msgID,errMsg,excObj) constructs instance e of matlab.exception.JavaException class.

Input Arguments

Output Arguments

Properties

Tips

• You do not typically construct a matlab.exception.JavaException object explicitly. MATLAB automatically constructs a JavaException object whenever Java throws an exception. The JavaException object wraps the original Java exception.

Copy Semantics

Handle. To learn how handle classes affect copy operations, see Copying Objects in the MATLAB documentation.

Examples

To display error information, use a matlab.exception.JavaException object in a try-catch statement.

try
    java.lang.Class.forName('myfunction');
catch e
    e.message
    if(isa(e,'matlab.exception.JavaException'))
        ex = e.ExceptionObject;
        assert(isJava(ex));
        ex.printStackTrace;
    end
end

More About

• Capture Information About Exceptions
• Throw an Exception