Questions tagged [java]
Java (not to be confused with JavaScript) is a class-based, object-oriented, strongly typed, reflective language and run-time environment (JRE). Java programs are compiled to bytecode and run in a virtual machine (JVM) enabling a "write once, run anywhere" (WORA) methodology.
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Find all combinations of numbers of a set that add up to a given target - avoid for loops
I am thinking about the following problem:
Consider a 3-numbers lock, i.e. a lock which has three little number wheels that opens whenever the sum of these three numbers equals 75. I know, this doesn'...
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Java 8 ThreadLocal Date With Lambda
I'm using Java 8 lambdas to initialize thread local date variable.
I am accessing these methods in multithreaded program.
Is it going to create garbage references as I am not using .remove() method on ...
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Is this object oriented code ok? (“Algorithms 4th Edition” by Robert Sedgewick and Kevin Wayne.) [closed]
I am reading "Algorithms 4th Edition" by Robert Sedgewick and Kevin Wayne.
I know little about object oriented programming.
https://algs4.cs.princeton.edu/code/edu/princeton/cs/algs4/Graph....
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Java GUI numbers to letters converter [closed]
I have this program, where I have java GUI and I wanted to ask if anyone would help me with a code in private class ActionRun to let user input numbers and output it's alphabetical order.
For example -...
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2answers
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reddit-like GUI
I am not very familiar with Swing but am attempting to make a Reddit GUI. I've finally got everything to work as expected but I must admit, it's quite mundane and not very nice to look at. I want to ...
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Add randomely generated number to an if condition [closed]
a heading on the top that says “Yay”
instructions "Yes or No".
add 4 Quotes.
When the user enters "Yes", the program generates a random number between 1 and 4. The program will ...
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1answer
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Correct use of Serializable with lambda functions
I'm practicing saving and reading serializable objects when a friend told me serializable objects have no use in real life, that I'd better focus on JSON or XML to serialize my objects when I came ...
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1answer
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Reading data from multiple different resource bundle property files in Java
I have class structure to read the data from resource bundle (property files).
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2answers
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Parking places design
I got a question:
Design a parking system. There are 3 types of parking spaces: big, medium and small.
Implement ParkingSystem class(int big, int medium, int small)....
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How can I store user input in arraylist java [closed]
when i run the code i want to save output that the user will enter, so , I will not need to enter every time I run the code to enter again , when I enter to display all student or faculty or book it ...
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Four methods that ask for User Input [closed]
Basically each time I try to run this program, and it gets to the printing steps it also skips through the print part of asking the user the first name, last name, and the character they've chosen. I ...
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Simple Ratelimiter Feedback
I'm preparing for coding interviews and I wanted to get feedback on this question which asks you to write a simple ratelimiter that can handle 5 requests every 2 seconds for example. Since it is for a ...
