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- 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 is the percent % operator in java? - Stack Overflow
What's the syntax for mod in java 113 Understanding The Modulus Operator % Related 3
- 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:
- 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:
- Proper usage of Java -D command-line parameters
You're giving parameters to your program instead to Java Use java -Dtest="true" -jar myApplication jar instead Consider using "true" equalsIgnoreCase(System getProperty("test")) to avoid the NPE But do not use "Yoda conditions" always without thinking, sometimes throwing the NPE is the right behavior and sometimes something like
- 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 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 - 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
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