I am running Eclipse on Windows. Following this tutorial I downloaded JDBC4, added it to my build path using Project>Properties>add External JAR, browsed for the file, it worked (.classpath file shows the correct lib path). The package appears in my Referenced Libraries folder, so I continue the tutorial. I think it would be as simple … Read more
I am having a problem in selecting home directory for JDK. Even though I have selected the following path: “C:\Program Files (x86)\Java\jre1.8.0_91”, it keeps showing the error: “The selected directory is not a valid home for JDK”. My java folder has two folders- bin and lib. Window for selecting home directory Kindly help me in … Read more
The static keyword in Java means that the variable or function is shared between all instances of that class, not the actual objects themselves. In your case, you try to access a resource in a static method, Thus anything we access here without creating an instance of the class Flavor1Demo has to be a static … Read more
If System.out.printf is giving you this error: Then you must configure your project for the proper Java version. Methods with variable arguments were introduced with Java 5. Alternatively, you could do:
To sort in descending order, you only need to change the comparison: Note the < instead of >.
No. You can use HTML in the label, but then you must hard code the break tag. A better approach is to use a JTextArea and turn wrapping on. You can change the background,foreground, font etc. of the text are to make it look like a label. Note, this answer is outdated as of at … Read more
Q: When should you use multithreading? A: “Your question is very broad. There are few non-trivial systems where the functionality can be met simply, quickly and reliably with only one thread. For example: [pick out a typical system that the target company sells and pick out a couple aspects of its function that would be … Read more
When you do the second one, you’re making a new arraylist, you’re not trying to pretend the other list is an arraylist. I mean, what if the original list is implemented as a linkedlist, or some custom list? You won’t know. The second approach is preferred if you really need to make an arraylist from … Read more
You really want to go to the top of your file and do proper and consistent indention all the way to the bottom. For example… Odds are, somewhere along the line, you are missing a }. Your description isn’t super clear, but if the code you posted is how you actually have it formatted in … Read more
Java Language Support extension provides basic features for the Java programming language. Current editing features include: Syntax highlighting and brace matching Outlining support for quickly collapsing classes and functions Dropdown bars listing classes, enums, interfaces, fields, and methods within the current document