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How to get names of classes inside a jar file?
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Unfortunately, Java doesn't provide an easy way to list classes in the "native" JRE. That leaves you with a couple of options: (a) for any given JAR file, you can list the entries inside that JAR file, find the .class files, and then determ...
How do I call one constructor from another in Java?
...structor parameters are used, consider a builder. See Item 2 of "Effective Java" by Joshua Bloch.
– koppor
Nov 13 '12 at 20:16
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Double vs. BigDecimal?
...mal. Otherwise Doubles tend to be good enough.
I do recommend reading the javadoc of BigDecimal as they do explain things better than I do here :)
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“implements Runnable” vs “extends Thread” in Java
From what time I've spent with threads in Java, I've found these two ways to write threads:
42 Answers
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Java Mouse Event Right Click
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I've seen
anEvent.isPopupTrigger()
be used before. I'm fairly new to Java so I'm happy to hear thoughts about this approach :)
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What are “Groovy” and “Grails” and what kinds of applications are built using them?
...e Groovy on Grails when we have standard programming languages like C/C++, Java/J2EE, and .NET/C#?
Because of point 5.
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How to call a stored procedure from Java and JPA
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JPA 2.1 now support Stored Procedure, read the Java doc here.
Example:
StoredProcedureQuery storedProcedure = em.createStoredProcedureQuery("sales_tax");
// set parameters
storedProcedure.registerStoredProcedureParameter("subtotal", Double.class, ParameterMode.IN);
stor...
throwing an exception in objective-c/cocoa
...o avoid using exceptions for common error situations". The same applies in Java; it's bad practice to handle user input errors (for example) with exceptions. Not just because of resource usage, but also for code clarity.
– beetstra
Dec 7 '10 at 12:58
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Difference between int[] array and int array[]
...l. The int array[] syntax was only added to help C programmers get used to java.
int[] array is much preferable, and less confusing.
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The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path [duplicate]
...click your project name in Eclipse Project Explorer -> Properties -> Java Build Path, and check Apache Tomcat server to add it to your Java Build Path.
– user1457659
Jan 21 '16 at 21:03
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