I’m new to Spring MVC Framework. I’m doing some self study to extend my knowledge in Java. This is how I understand the getProducts() code definition from a tutorial I’m following but please correct me if I’m wrong. Controller requests something from the Data Access Object > Data Access Object gets the data from a … Read more
I’m new to JAVA and I’m trying to read data from a .txt file. I’ve implemented a Scanner object ‘in’ Scanner in=new Scanner(“file.txt”); and then down the code a while loop to traverse through the content of the file.There are multiple rows of data in the file and in each row there are three strings … Read more
When can a certain object be cast into another object? Does the casted object have to be a subtype of the other object? I’m trying to figure out the rules… Edit: I realized that I didn’t explain my issue at all: basically I am casting an object to an interface type. However, at run-time, I … Read more
There is no import aliasing mechanism in Java. You cannot import two classes with the same name and use both of them unqualified. Import one class and use the fully qualified name for the other one, i.e.
You can use \t to create a tab in a file.
The fillOval fits an oval inside a rectangle, with width=r, height = r you get a circle. If you want fillOval(x,y,r,r) to draw a circle with the center at (x,y) you will have to displace the rectangle by half its width and half its height. This will draw a circle with center at x,y
Why am I getting “uses unchecked or unsafe operations” error everytime i compile? What’s wrong with the code? I copied the exact same code from this tutorial http://www.mkyong.com/java/json-simple-example-read-and-write-json/
Your gradle version is: 1.8 which is not working anymore so you probably have to update it: 1- Go to -> https://gradle.org/install check out the latest verion number. 2- In your project directory navigate to \gradle\wrapper\ directory and edit: gradle-wrapper.properties file. change: to: https://services.gradle.org/distributions/gradle-3.3-all.zip 3- go to Tools→Android→Sync Project with Gradle files 4- If sync doesn’t do the job restart Android studio
That sounds pretty bad and weird. But reinstalling isn’t that hard – download, unzip, change the default memory allocation, run Eclipse, install necessary plugins and features. And almost all of the important preferences are in your workspace. The only important one I can think of outside of the workspace is the aforementioned memory allocation, which … Read more
Yes, you’ll have to recompile the DLL for 64-bit. Your only other option is to switch to a 32-bit JVM, or otherwise get some 32-bit process to load the DLL on your behalf and communicate with that process somehow.