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I am writing a piece of code that allows users to enter test scores. I then need to use the Math.max and Math.min to keep track of max and min and display the answer. I am not sure where I type that code or how I type that code.
Please let me know what pieces of the code would be helpful to post!
Thanks in advance!
Start by breaking down the problem into steps and figure out what you need to know. In your case you need to know four things:
How to get input from the console
How to compare values
How to conditionally change values
How to display things to the console
One and four you can search up pretty easy. Look into "Hello world" and other such starter programs for Java. Two and three you should look up "if" statements for Java. Hope this sets you on the right track.
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I'm trying to create JLabels in a loop and remove them at the End. So I need to give every Label its own name (Like Label[1], Label[2],...). I'm very new to Java so I can't imagine how to solve this problem. I already tried different ways but they all didn't work.
I am not sure but you can add a number of anonymous objects(in this case they will be JLabel or Label) to the Array List without naming them.(You need to use for loops). If you want to delete them, you need to use the same logic.
Let me know this works or not. If you stuck again, I can help you by writing the code. However, writing yourself will be more beneficial for you.
Have a nice day !!
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i am having some issues with this question for my homework and was wondering if anyone has any ideas or insights to the answer really struggling ,,,,
You are to amend the program you created last week, this time however the program will ask you to
type the names that need to be stored. Once this is complete the program will display the names in
alphabetical order and display the number of characters for each name and the number of vowels
each name has.
Since this is homework, I'll give you a hint. If you've studied the Java Collections, you can stored the names in alphabetical order. If you've not got to collections yet, the you simply save them off as Strings as they come in.
When it's time to display them in alphabetical order you could:
- sort them before you display them
- or brute force it. Loop thru your storage of names and display all the A's. Then loop thru picking up the B's.
As for counting vowels, look at the Java documentation for the methods that are on the String class. Hint - look for methods that return an "int".
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I'm trying to make a program that :
accepts a string of characters(initial), i.e. a DNA sequence.
The number of characters that are accepted should be given as an input before inserting the string.
Accepts a number, then receives the same number of characters
Find all the possible 'mutations' that could occur from input 2, and check in input 1 whether there are occurrences of these mutations.
Mutations are a number of strings that could be made from input 2. For example, with AGGT, GAGT, GGAT, TGGA, AGGT, ATGG, and AGTG.
So a sample run of the program would be like
2
6 4
ATGGAT
AGGT
3
Usually, when you ask a question on this site, you should show us the effort you put in your work and exactly show or tell us where do you think what you did does not work.
I am not giving you an answer, but I'm giving you better: the opportunity to learn more on the subject. You can learn about what we call in java "regular expressions" here:http://docs.oracle.com/javase/tutorial/essential/regex/
If you make an update of your query showing us what you did, people might be more encline to help you. Stackoverflow has a great community of programmers who are willing to help you just as long as you show them respect by showing where you failed and not directly asking answers for your type of problems !
Learning about regex will definetly help you out to solve this situation. If you build a method using regex and matches and you have issues with it, post what you did and what was intended with this method !
Hope it helps you :)
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Basically what I am asking is how do games check what the user inputs all the time, not just when the user is asked to input an integer or a word but I am ALL the time.
Example: Runescape, Minecraft, WoW, any game developed that uses text based communication always has that function that if you type in the pretty box it spits out what you said in a world chat box, how do I do that as such (Not a world chat box) but simply a put out.
Simply put, by polling. Games use loops which run 20+ times a second and check for whether the user is causing input via keyboard/mouse.
There are hundreds of great tutorials
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I am trying to write a java program that will take in a expression as an input string (of the form R1*R2 + R2*R3 ) and then display the corresponding circuit.
For ex: The output should be something like this
Add a resistor R1.
To its end, Add a resistor R2.
Start a new connection.
Add a resistor R2.
To its end, Add a resistor R3.
I will like to represent it in diagram, but first I will just like to realize it like the above for simplicity.... Please suggest an algorithm !!
As I see it this involves solving two fairly non-trivial tasks:
You need to parse the expression. I bet you'd like to have parenthesized expressions as well, such as (R1+R2)*R3. This calls for using a proper parser. I'd recommend you to look into parser generators such as JFlex/JavaCup or ANTLR.
If you want to display it to the user in a sensible way, you need to lay out the components in two dimensions nicely. This is basically a graph-problem, which can be solved by existing libraries. Still, as I said, it may not be trivial to implement.