What is the percent % operator in java? - Stack Overflow
2021年7月16日 · n%10 means modulus of 10. This is used to get last digit. Let's say your number is 12345 12345 % 10 means remainder when 12345 is divided by 10, which gives you 5. Thereafter when you perform (n/10) you get 1234 (all the numbers except the least significant digit that you got in previous step).
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".
What does the ^ operator do in Java? - Stack Overflow
2010年1月2日 · 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.
java - What are the -Xms and -Xmx parameters when starting …
2013年2月7日 · 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 …
in java what does the @ symbol mean? - Stack Overflow
2015年8月5日 · The @ symbol denotes a Java Annotation. What a Java annotation does, is that it adds a special attribute to the variable, method, class, interface, or other language elements.
java - Extracting .jar file with command line - Stack Overflow
2011年12月10日 · Java has a class specifically for zip files and one even more specifically for Jar Files. java.util.jar.JarOutputStream java.util.jar.JarInputStream using those you could, on a command from the console, using a scanner set to system.in Scanner console = new Scanner(System.in); String input = console.nextLine(); then get all the components and write them as a file. JarEntry JE = null; while((JE ...
java - How to configure port for a Spring Boot application - Stack …
How do I configure the TCP/IP port listened on by a Spring Boot application, so it does not use the default port of 8080.
What is the difference between & and && in Java?
2011年4月9日 · I always thought that && operator in Java is used for verifying whether both its boolean operands are true, and the & operator is used to do Bit-wise operations on two integer types. Recently I came to know that & operator can also be used verify whether both its boolean operands are true, the only difference being that it checks the RHS operand even if the LHS operand is false. Is the ...
java - How to run a JAR file - Stack Overflow
2016年12月4日 · If you don`t want to create a manifest just to run the jar file, you can reference the main-class directly from the command line when you run the jar file. java -jar Predit.jar -classpath your.package.name.Test This sets the which main-class to run in the jar file.
java - && (AND) and || (OR) in IF statements - Stack Overflow
An interesting fact is that Java also uses the & and | as logic operands (they are overloaded, with int types they are the expected bitwise operations) to evaluate all the terms in the expression, which is also useful when you need the side-effects.