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Can array elements have different data types? Can someone please explain?

Thank you so much for your great explanation.

Can someone please tell me what an array is, and what are the advantages of using arrays? Also please type a few lines of code demonstrating how you would declare an array and initialize it.
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Can someone please define a String in Java in as much detail as possible? Thanks so much.

Can someone please explain in enough detail about "Overloaded Methods and Constructors?" I would really appreciate it, thank you.

Can someone please discuss exactly what 'Call by value parameter passing' is. In relation to Java programming. Please help.

Common pitfalls of writing loops are :
Not including a statement that will eventually makes the boolean expression false.
Not avoiding to use real numbers for testing and increments
The inclusion...

Can anyone please discuss some common pitfalls of writing loops in Java. Thanks so much.

Okay so I know that In the switch statement, the selection is determined by the value of an expression that you specify, which is enclosed between the parentheses after the keyword switch. The data...

Please I really need to know what is a constructor? How do you differentiate between a constructor and a default constructor? Can someone please explain in detail, because I can't seem to find any...

Thank you so much for your help.

I'm new to this website so could everyone please forgive me if I'm posting in the wrong section but I really need help. I need to know What is a switch? And can someone please discuss why/when we use...