For statment -- defining code with a for statment

Question

i want to be able to use a for statment for the following. I can change Strings, intagers and doubles with for statment but i don't know how to change number in the actoul code
here is a small example of the code i want to shorten
OutSideClass newClass1 = new OutSideClass;
OutSideClass newClass2 = new OutSideClass;
OutSideClass newClass3 = new OutSideClass;
OutSideClass newClass4 = new OutSideClass;
newClass1.Input();
newClass2.Input();
newClass3.Input();
newClass4.Input();

Answer 1

MyClass[] classes = new MyClass[4];
for(int i = 0; i<classes.length; i++){
classes[i] = new MyClass();
classes.Input();
this looks like what i need but i don't get the MyClass[ ] part........ the only ones ive used in a array are Intager[ ], String [ ], and Double[ ].
is there anything that needs to be predefined to use MyClass[]?