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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 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.

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 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.

6. 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 ...

7. 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 ...

8. Setting the default Java character encoding - Stack Overflow

   stackoverflow.com/questions/361975

   1. Setting up jvm arguments while starting application helped me resolve this issue. java -Dfile.encoding=UTF-8 -Dsun.jnu.encoding=UTF-8. file.encoding=UTF-8 - This helps to have the Unicode characters in the file. sun.jnu.encoding=UTF-8 - This helps to have the Unicode characters as the File name in the file system.

9. in java what does the @ symbol mean? - Stack Overflow

   stackoverflow.com/questions/31822020

   In Java Persistence API you use them to map a Java class with database tables. For example @Table() Used to map the particular Java class to the date base table. @Entity Represents that the class is an entity class. Similarly you can use many annotations to map individual columns, generate ids, generate version, relationships etc.

10. java - How to run a JAR file - Stack Overflow

    stackoverflow.com/questions/1238145

    java -jar myjar.jar - is the default option to run application; java -cp my-class-path my-main-class or java -classpath my-class-path my-main-class; java --module-path my-module-path --module my-module/my-main-class; Deployment to an enterprise server. It's when you have war or ear file. We'll omit the explanation for this case

11. 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 ...