Steps for your work : 1) Fetch the file name from directory. 2) Check whether it contains ard or not. 3) If yes, then convert the rest of file name without extension to Integer or Long or whatever Number. If No, go to step 1 to check next file if any. 4) If value of … Read more
Android Studio can actually convert Java to Kotlin for you. Press Code > Convert Java File to Kotlin File. solved Translate java widget to kotlin [duplicate]
You just need to see the pattern and replicate it in your code. Here is one way to solve this, which can also be used to produce larger matricies (set the max variable to a different value): public class main{ public static void main(String[] args){ int max = 5; for(int i = 1; i < … Read more
Take a look at your btMinusActionPerformed method: private void btMinusActionPerformed(java.awt.event.ActionEvent evt) { // minus button firstNumber = Float.parseFloat(calScreen.getText()); OP = “-“; numberClick += 1; if (!calScreen.getText().equals(“-“) && numberClick == 2){ btEqual.doClick(); } else { calScreen.setText(“-“); // <- What does this do? } } Then take a look at the btEqualActionPerformed method: private void btEqualActionPerformed(java.awt.event.ActionEvent evt) … Read more
I’m not quite sure what you are trying to do with this. But I think this will clear up the things for you. public class Course{ private String course = “CS101”; } public class FinishedCourse extends Course{ public void displayCourse(){ System.out.println(super.course); //compilation error. //You cannot access private variables even if it is in direct parent … Read more
The block: catch (Exception ex) { System.out.println(“NumberFormatException”); } will catch all the exceptions, as the Exception class is the base class for all the exceptions. When you catch Exception, you catch all the exceptions that extend Exception, which, all the exceptions do. Hence it produces the error that RuntimeException has already been caught solved Analyze … Read more
Your question is not very clear, but the String name is a java.awt.Component property. In case you mean this name, you can change a component’s name with .setName() and get the name with .getName(). A component’s name by default is null, until you set it. It makes usually sense to .getName() in listeners. Here is … Read more
Quickly allocate 1 GB of memory: byte[][] memoryWaster = new byte[1024][1_048_576]; See last test run below for successful allocation of 16 GB of memory. Test program Runtime runtime = Runtime.getRuntime(); System.out.printf(“total: %11d max: %d%n”, runtime.totalMemory(), runtime.maxMemory()); System.out.printf(“used: %11d%n”, runtime.totalMemory() – runtime.freeMemory()); System.gc(); System.out.printf(“gc: %11d%n”, runtime.totalMemory() – runtime.freeMemory()); byte[][] memoryWaster = new byte[1024][1_048_576]; memoryWaster[0][0] = 2; … Read more
The following code snippet is a very basic example of how something like this could be designed – it should give you a basic idea of how it could be expanded, to add more details to the cases or maybe add some other methods such as only viewing a specific case carrying a certain name … Read more
You need to fix your table A so it is in First Normal Form: Name Value a 13889483-d92a-483e-9e16-471cb22b82a3 a a7ced9c5-e7bc-4214-be77-a26d8f86844b Then you can connect the tables using a SQL join: SELECT B.* FROM A JOIN B ON B.Name = A.Value WHERE A.Name=”a” solved Sqlite select value as id to other table
I’d recommend you split the String in a separate step prior to the iteration. Also, validate that you really do receive the expected parameter from the HTTP request in the first place. solved JavaEE, Jboss, Empty string somewhere [closed]
For a start, here is the original ArregloBinario class with the spacing fixed up: package laboratorio9; import java.util.Random; import java.util.Arrays; public class ArregloBinario { private int[] datos; private static Random generador = new Random(); public ArregloBinario (int tamanio) { datos = new int[tamanio]; for (int i=0; i<tamanio; i++) datos[i] = 10 + generador.nextInt(90); Arrays.sort(datos); } … Read more
Use braces for complex operations. Also, you should remember BODMAS Rule: Bracket Of Divide Multiply Addition Subtraction int ans=(42+45-48-5-15+20)*2; 0 solved Code does not output expected value; how to modify it to obtain the expected result? [closed]
You may want to add a LayoutManager to your window. NetBeans has support for it. Right-click inside your window in NetBeans, hover “Set Layout” and select a proper LayoutManager. I always use GridBagLayout. Here is a tutorial: http://docs.oracle.com/javase/tutorial/uiswing/layout/gridbag.html Good Luck. 10 solved Netbeans desktop application of teacher attendance [closed]
It looks like you’re not trying to make it “unique” but, like the title says “consistent.” This is difficult to do. What you need to do is parse the data, allowing for different types of identifying strings. For example, for house, it looks like you want to accept “Ho. #”, “h no.”, and “h#”. Once … Read more