In Java, single quotes can only take one character, with escape if necessary. You need to use full quotation marks as follows for strings: You also used which I assume should be Note: When making char values (you’ll likely use them later) you need single quotes. For example:
This will happen when you doubleclick a JAR file in Windows explorer, but the JAR is by itself actually not an executable JAR. A real executable JAR should have at least a class with a main() method and have it referenced in MANIFEST.MF. In Eclispe, you need to export the project as Runnable JAR file instead of as JAR file to get a real … Read more
Suposse you have Class1 Class2 and then you can use Class2 in different ways. Class Field Method field Static methods from Class2 Imagine this is your class2. from class1 you can use doSomething from Class2 whenever you want
The class AbstractMap.SimpleEntry is generic and can be useful.
I wrote this controller to keep track of the different scenegraphes. So I can write: This was a workaround for a fullscreen application, where the MacOS fullscreen transition was shown every time a stage switches its scene.
Task: Each line will contain a non-empty string. Read until EOF. For each line, print the line number followed by a single space and the line content. Sample Input: Sample Output:
Try, This will work as long as you don’t use it in a static method.
String::repeat New in Java 11 is the method String::repeat that does exactly what you asked for: Its Javadoc says:
This whileloop is strange: If your input file is: Then scanner.nextLine() would be return a, then scanner.next() would return b, because nextLine returns the next end-line delimited String, and next returns the next token from the input file. Is this really what you want? I’d suggest trying this: Keep in mind that this would only … Read more
I am trying to fix a problem after the new feature added in Android file system but I get this error: So I hope some one can help me fix this 🙂 Thanks