in java what does the @ symbol mean? - Stack Overflow
Aug 5, 2015 · 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 …
What does the arrow operator, '->', do in Java? - Stack Overflow
That's part of the syntax of the new lambda expressions, to be introduced in Java 8. There are a couple of online tutorials to get the hang of it, here's a link to one. Basically, the -> separates …
What is the difference between == and equals () in Java?
0 In Java, == and the equals method are used for different purposes when comparing objects. Here's a brief explanation of the difference between them along with examples: == Operator: …
Setting JAVA_HOME environment variable in MS Windows
JAVA_HOME and PATH are different, I didn't say point JAVA_HOME to the jre/bin directory. Try making sure that the PATH environment variable includes the jre/bin directory. For example, …
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 are the -Xms and -Xmx parameters when starting JVM?
Feb 7, 2013 · 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 …
java - Extracting .jar file with command line - Stack Overflow
Dec 10, 2011 · 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 …
java - SSL and cert keystore - Stack Overflow
Aug 16, 2021 · How does my Java program know where my keystore containing the certificate is? Or alternatively: How do I tell my Java program where to look for the keystore? After specifying …
java - javac is not recognized as an internal or external command ...
Oct 10, 2011 · If java command is working and getting problem with javac. then first check in jdk's bin directory javac.exe file is there or not. If javac.exe file is exist then set JAVA_HOME as …
What is the difference between & and && in Java? - Stack Overflow
Apr 9, 2011 · 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 …