Medium Article removing setters; adding all args constructor; marking the class as final to protect it from being extended; initializing all non-primitive mutable fields via constructor by performing a deep copy; performing cloning of the returned non-primitive mutable object in getter methods; marking all class fields as final (optional step). Now we are going to talk about immutable… Continue reading Immutable classes in Java
Original Blog 1) The string is immutable in Java: String is by design immutable in Java you can check this post for a reason. Immutability offers a lot of benefit to the String class e.g. his hashcode value can be cached which makes it a faster hashmap key and one of the reasons why String is a popular… Continue reading Java String
Is a volatile int in Java thread-safe? That is, can it be safely read from and written to without locking? Yes, you can read from it and write to it safely - but you can't do anything compound such as incrementing it safely, as that's a read/modify/write cycle. There's also the matter of how it… Continue reading Java – Resources
Wiki Round-robin DNS is a technique of load distribution, load balancing, or fault-tolerance provisioning multiple, redundant Internet Protocol service hosts, e.g., Web server, FTP servers, by managing the Domain Name System's (DNS) responses to address requests from client computers according to an appropriate statistical model. In its simplest implementation, Round-robin DNS works by responding to DNS requests not only with a single potential IP address, but… Continue reading Round-robin DNS
1 December - Minimum number of jumps to reach end | Set 2 (O(n) solution). SO 2 December - find sum(S) of all contiguous sub-array's max difference, SO 3 December - The Enlightened Ones. HE 4 December - Minimize Cash Flow among a given set of friends who have borrowed money from each other. GFG… Continue reading December Problem Solving
Symbols and it's meaning in Class Diagram https://www.youtube.com/watch?v=xiUFTLIU-lw
Concurrency is about dealing with a lot of things at once while parallelism is about doing a lot of things at once. Video
SO Lately, I took an interview. I was asked to design a meeting scheduler, just like in the Microsoft outlook calendar or the gmail calendar. I proposed that I will create an array of 48 for each day. Every 30 min representing the array entry. I have to make sure that the next appointment does… Continue reading Design a Meeting Scheduler
Link 1. Pure greedy Dispatch every idle car to pick up the closest passenger that is waiting for a ride. This is probably the most straight-forward approach, nonetheless quite effective. I’d venture to say that this is probably the most common approach for taxi companies because of its simplicity and ease of execution. 2. Greedy… Continue reading Cab Scheduling Algo
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