How to know if type is array or not

[Meir Yan]

im getting from method the parameters types

Class[] types = currentMethod.getParameterTypes();

now i like to know if types[i] is array or not
if i do : types[j].getName() im getting only the type name but no indication if its array or not

how can i do that ?

[Ernest Friedman-Hill]

"types[i]" is an instance of java.lang.Class. Did you look carefully at the Javadocs for this class? For example, are there any methods with "array" in their names that look promising?

[Meir Yan]

Hi sorry i meant how to know if its 2 dimensional array
simple case to know if its array i will use isArray

[Ernest Friedman-Hill]

In Java "2D arrays" are actually arrays of arrays. The Class.getComponentType() method tells you the type of the data an array can hold; for a "2D array", this will be another array type. So something like

boolean is2DArray(Class clazz) {
    if (!clazz.isArray())
        return false;
    return clazz.getComponentType().isArray();
}

Of course, this also returns true for "3D", "4D", etc, arrays.