It throws a NumberFormatException. From the Javadoc on Integer.parseInt(String s): Throws: NumberFormatException – if the String does not contain a parsable int. Retrieving the ASCII value of a character is done like this: char ch=”a”; System.out.println((int)ch); 1 solved What would be the value of variable after executing the following statement
First make ‘path’ a StringBuffer to make it easier to work with. Then use indexes: StringBuffer path = new StringBuffer(“cmd /c start D:\\SMPPPushGW_SMSCID1_Passive\\note.bat”); String result = path.substring(path.indexOf(“start”)+5, path.lastIndexOf(“\\”)); As mentioned, File API may be useful, but also URI. solved Working with strings in java : extract a particular string [closed]
In short: primitive types and “Primitive wrappers (Integer, Long, Short, Double, Float, Character, Byte, Boolean)” can not be altered via reference. Check http://en.wikipedia.org/wiki/Immutable_object for Details 5 solved Pass by Ref Java. Integer ins’t modified, Collection is modified, Why? [duplicate]
you need to register your class as a listener, make your class implements ServletContextListener and register it in web.xml and restart your tomcat you can find a lot of tutorials online that shows you the details of this. solved when tomecat server run , then my java class run [closed]
You have given no HTML or any script you have tried yourself as such the below should serve as a good template for you to get started. DEMO – Cascading dropdowns, show managers for selected department Assuming the following HTML <div> <div style=”float: left;”> Select Department <br /> <select id=”departments”></select> </div> <div style=”float: left; margin-left: … Read more
Here’s something to get you started : import java.util.Calendar; public class DaysLeft { public static void main(String args[]) { Calendar cal = Calendar.getInstance(); int max_days = cal.getMaximum(Calendar.DAY_OF_YEAR); int today = cal.get(Calendar.DAY_OF_YEAR); int days_left = max_days – today; System.out.format(“We have a maximum of %d days this year.\n”, max_days); System.out.format(“Today is day number %d.\n”, today); System.out.format(“That means … Read more
It is really complicated to validate an email address, still there are a bunch of regular expression you can find on the web that will check certain important things, like this one for example ^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$. Unfortunately I don’t think there is an ultimate regex that will catch every “non-sense” you can find in an email … Read more
This is the error here The servlets named [Book] and [pack2.Book] are both mapped to the url-pattern [/Book] which is not permitted The way what you mapped these servlets in web.xml is not correct. Your mapping should be <servlet> <servlet-name>servlet logicalname</servlet-name> <servlet-class>Here complete servlet name with package name</servlet-class> </servlet> <servlet-mapping> <servlet-name>servlet logicalname</servlet-name> <url-pattern>/url pattern</url-pattern> </servlet-mapping> … Read more
Looking it up, the thing you’re using (“Ready to program Java”) comes with Java 1.4. It’s ancient. So … no, @Override isn’t allowed, and also you can not set the layout directly on the JFrame. See: http://docs.oracle.com/javase/1.4.2/docs/api/javax/swing/JFrame.html#setLayout(java.awt.LayoutManager) By default the layout of this component may not be set, the layout of its contentPane should be … Read more
Lets assume that the inner loop actually does something. FredrikRedin and niculare are, of course, correct, that the number of inner loop executions will be the same. Given that this is the case, the second example is preferred (slightly) because the second example has to set up the inner loop ten times, while the first … Read more
Explanation Your error message is pretty straightforward, carefully read it: Error on line 12: constructor Game in class Game cannot be applied to given types; return r.toString() + “\n” + super.play(new Game()) + “\n”; ^ required: java.lang.String found: no arguments reason: actual and formal argument lists differ in length So you are calling new Game(), … Read more
Where is the class for CallFlowResource?? A simple way would be for you to create a list and add the values as you want them to be outputted. It you would look like this: public List<CallFlowResource> getCallFlow(CallFlowObject obj) { List<CallFlowResource> callFlowRes = new ArrayList<>(); for(int i = 0; i<size; i++) { callFlowRes.add(obj.GetterMethodForCFR(i)); } return callFlowRes; … Read more
This answer about configuring the ecilpse.ini file can help you: What are the best JVM settings for Eclipse? The configuration I have has increased a bit the overal performance, but at the cost of slightly slower startup -startup plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar –launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120913-144807 -product org.eclipse.epp.package.jee.product –launcher.defaultAction openFile –launcher.XXMaxPermSize 256M -nosplash –launcher.XXMaxPermSize 256m –launcher.defaultAction openFile -vmargs -server -Dosgi.requiredJavaVersion=1.7 … Read more
Use Jython. It has a built-in compiler to convert .py files to .class, called jythonc. solved How do I convert my *.py files to *.class files? [closed]
Movie class can have String name and int year fields.Get their setter and getter method. Initialize them by constructor like new Movie(String name , int year); 1 solved I need to know how to set a variable to this value in Java