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2. What does the ^ operator do in Java? - Stack Overflow

   stackoverflow.com/questions/1991380

   It is the Bitwise xor operator in java which results 1 for different value of bit (ie 1 ^ 0 = 1) and 0 for same value of bit (ie 0 ^ 0 = 0) when a number is written in binary form. ex :-. To use your example: The binary representation of 5 is 0101. The binary representation of 4 is 0100.

3. What is the Java ?: operator called and what does it do?

   stackoverflow.com/questions/798545

   Yes, it is a shorthand form of. count = getHereCount(index); count = getAwayCount(index); It's called the conditional operator. Many people (erroneously) call it the ternary operator, because it's the only ternary (three-argument) operator in Java, C, C++, and probably many other languages.

4. How do the post increment (i++) and pre increment (++i) operators...

   stackoverflow.com/questions/2371118

   i = 7 + 6 + 7. Working: pre/post increment has "right to left" Associativity , and pre has precedence over post , so first of all pre increment will be solve as (++a + ++a) => 7 + 6 . then a=7 is provided to post increment => 7 + 6 + 7 =20 and a =8. a=5; i=a++ + ++a + ++a; is. i=7 + 7 + 6.

5. What does the arrow operator, '->', do in Java? - Stack Overflow

   stackoverflow.com/questions/15146052

   The arrow operator is used to create lambda expressions, linking/separating parameters with the lambda body. syntax: (parameters) -> {expression}; It is also an efficient way of implementing functional interfaces like onClickListeners in java. answered Dec 2, 2022 at 10:09.

6. java - Using NOT operator in IF conditions - Stack Overflow

   stackoverflow.com/questions/4775379

   Java 11 added isEmpty, but before that there was only isPresent. Image you are trying to return early from a function ( a common programming best practice) Image you are trying to return early from a function ( a common programming best practice)

7. java - What is a Question Mark "?" and Colon - Stack Overflow

   stackoverflow.com/questions/10336899

   323. This is the ternary conditional operator, which can be used anywhere, not just the print statement. It's sometimes just called "the ternary operator", but it's not the only ternary operator, just the most common one. Here's a good example from Wikipedia demonstrating how it works: A traditional if-else construct in C, Java and JavaScript ...

8. What is the percent % operator in java? - Stack Overflow

   stackoverflow.com/questions/43975824

   n%10 means the modulus of 10, that is the remainder you get when you divide with 10. Here it is used to get each digit. Example: Say your number is n = 752. n%10 = 2, n/10 = 75. So you add 2 to the sumDigits(75) Now, n%10 = 75%10 = 5. This is the digit to be added and so on, till your n >= 10. When it is < 10, you have a single digit that you ...

9. What is the difference between == and equals () in Java?

   stackoverflow.com/questions/7520432

   Since java.lang.String class override equals method, It return true if two String object contains same content but == will only return true if two references are pointing to same object. Here is an example of comparing two Strings in Java for equality using == and equals() method which will clear some doubts:

10. What are the -Xms and -Xmx parameters when starting JVM?

    stackoverflow.com/questions/14763079

    The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool. This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory. For example, starting a JVM like below will start it with 256 MB of ...

11. Proper usage of Java -D command-line parameters

    stackoverflow.com/questions/5045608

    Try this: java -Dtest="true" -jar myApplication.jar. From the command line help: java [-options] -jar jarfile [args...] In other words, the way you've got it at the moment will treat -Dtest="true" as one of the arguments to pass to main instead of as a JVM argument. (You should probably also drop the quotes, but it may well work anyway - it ...