Totally 30 mins 1) Find min max in an array 2) Reverse an array 3) Java Thread related questions 4) why string immutable

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Java interview questions on array manipulation, threading, and string immutability.

To find min and max in an array, initialize min and max variables to the first element and iterate through the array comparing each element to update min and max accordingly.
To reverse an array, swap the first and last elements, then the second and second-to-last elements, and so on until the middle of the array is reached.
Java threads allow for concurrent execution of code. Use the Thread class or implement the Runnable interface to create and start threads.
Strings are immutable in Java to ensure their values cannot be changed accidentally or maliciously. This allows for safe sharing of string objects across multiple threads.

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