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What is the difference between == and equals () in Java? 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:
What is the Java ?: operator called and what does it do? In particular, if Java ever gets another ternary operator, people who use the term "conditional operator" will still be correct and unambiguous - unlike those who just say "ternary operator" Yes, the phrase "ternary operator" has stuck - my answer is part of an effort to "unstick" it, just as I try to correct the claim that "objects are passed
What does the ^ operator do in Java? - Stack Overflow Exponentiation in Java As for integer exponentiation, unfortunately Java does not have such an operator You can use double Math pow(double, double) (casting the result to int if necessary) You can also use the traditional bit-shifting trick to compute some powers of two That is, (1L << k) is two to the k-th power for k=0 63 See also
java - (AND) and || (OR) in IF statements - Stack Overflow All the answers here are great but, just to illustrate where this comes from, for questions like this it's good to go to the source: the Java Language Specification Section 15:23, Conditional-And operator ( ) , says:
java - Setting active profile and config location from command line in . . . Option 1: Java System Properties (VM Arguments) It's important that the -D parameters are before your application jar otherwise they are not recognized java -jar -Dspring profiles active=prod application jar Option 2: Program arguments java -jar application jar --spring profiles active=prod --spring config location=c:\config
What does the += operator do in Java? - Stack Overflow In java the default type of numbers like 2 or -2(without a fractional component) is int and unlike c# that's not an object and we can't do sth like 2 tostring as in c# and the default type of numbers like 2 5(with a fractional component) is double; So if you write:
java - What is a classpath and how do I set it? - Stack Overflow The Java launcher, java, initiates the Java virtual machine The virtual machine searches for and loads classes in this order: Bootstrap classes - Classes that comprise the Java platform, including the classes in rt jar and several other important jar files Extension classes - Classes that use the Java Extension mechanism