User`s manual

Working with Java Arrays

5-43

The dblArray data structure s actually an array of five-element arrays of

java.lang.Double objects. The empty array assignment placed the NULL value

in the fourth element of each of the lower level arrays.

Concatenating Java Arrays

You can concatenate arrays of Java objects in the same way as arrays of other

data types. (To understand how scalar Java objects are concatenated by

MATLAB see “Concatenating Java Objects” on page 5-12.)

Use either the

cat function or the square bracket ([]) operators. This example

horizontally concatenates two Java arrays:

d1, and d2.

% Construct a 2-by-3 array of java.lang.Double.

d1 = javaArray('java.lang.Double',2,3);

for m = 1:3 for n = 1:3

d1(m,n) = java.lang.Double(n*2 + m-1);

end; end;

d1 =

java.lang.Double[][]:

[2] [4] [6]

[3] [5] [7]

[4] [6] [8]

% Construct a 2-by-2 array of java.lang.Double.

d2 = javaArray('java.lang.Double',2,2);

for m = 1:3 for n = 1:2

d2(m,n) = java.lang.Double((n+3)*2 + m-1);

end; end;

d2 =

java.lang.Double[][]:

[ 8] [10]

[ 9] [11]

[10] [12]