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  • How do the post increment (i++) and pre increment (++i) operators work . . .
    Can you explain to me the output of this Java code? int a=5,i; i=++a + ++a + a++; i=a++ + ++a + ++a; a=++a + ++a + a++; System out println(a); System out println(i
  • 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
  • in java what does the @ symbol mean? - Stack Overflow
    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
  • 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
  • What is the percent % operator in java? - Stack Overflow
    ParallelSudokuSolver java: solving semi-large Sudokus via multi-threading Why is this code 5 times slower in C# compared to Java? How to named path and get fraction point of `arc` in my tikz example?
  • Java Versions and Compatibility - Stack Overflow
    Java SE is a set of specifications published by Oracle Corp Java (and Java SE) is a trademark owned by Oracle Corp Available for use only with permission by Oracle A JDK is an implementation of the Java specs, plus a compiler and other tools for development and administration
  • 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 is the difference between and in Java?
    In respect of the AND and OR operators, Java has got two types of evaluation namely Short-Circuit evaluation and full evaluation || Short-Circuit Evaluation Short-Circuit evaluation enables you to not evaluate the right-hand side of AND and OR expressions, when the overall result can be predicted from the left-side value
  • logging - How to use log levels in java - Stack Overflow
    The java util logging Level documentation does a good job of defining when to use a log level and the target audience of that log level Most of the confusion with java util logging is in the tracing methods It should be in the class level documentation but instead the Level FINE field provides a good overview:
  • 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:





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