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If you are allowed to use substring() method, use it to take out the first letter of one's first name and last name. If you are not allowed, use array.

The question is very straightforward. Create a instance class, four instance variables, one constructor, and two instance methods.

It is possible to convert Roman numbers to Arabic numbers by using loop and if-else statement. Here is my suggestion: read the Roman numbers from the left to the right. If the leftmost number is...

I'm working on porting my Applet to Android and iOS. That would be nice if you show me some tutorials on how to run Applet as a Desktop app.

Hi,

I want to run my Java Applet as Web or Desktop application but don't know how. I've watched some tutorials online about converting Java applet file (.class) to Web app. However, my Applet has...

AudioClip object has three methods: play(), stop(), and loop() (which plays again and again).

"c:/FilePractice/text.txt" is wrong, should it be "\", instead of "/"?

Let's say you want to create a text file in C:\MyData\Java. You should add: "C:\\MyData\\Java\\textfile.txt" .

Only III is correct. Even though you may use I & II to create a String ArrayList, you still need to cast them before using.

Shorter way for you



if (n1 > 0 && n2 > 0 && n3 > 0 && n4 > 0 && n5 > 0)
do your tasks if those input numbers are valid

Overriding method: same signature (same return type, list of parameters, name of method), but do slightly different task.
Overloading method: same name of method, but different list of parameters.

I tested on my Eclipse and it ran fine (after fixing semicolon)

You need to know at least these things below to write that program:
1) Know how to prompt user to input value
2) Know how to use loop
3) Know the difference between integer and double.

What is m? What is n? You are supposed to assign m and n with the length those array.
Also, you do not need Scanner in =new Scanner(System.in);