It depends on your operating system. On Windows the new FileOutputStream(…) will probably fail. On Unix-line systems you will get a new file while the old one continues to be readable. However your copy loop is invalid. available() is not a test for end of stream, and it’s not much use for other purposes either. … Read more
You can’t just instantiate your Activity and access the TextView members on it. This doesn’t make any sense: indoor_patient ins=new indoor_patient(); String webUrl = “http://10.0.3.2:8084/data_web/indoorPatient.jsp?sr_no=” + ins.sr_no.getText().toString() Instead you could figure out what your webUrl is in your onClick() method and pass in the complete URL as a parameter to the AsyncTask: submit.setOnClickListener(new View.OnClickListener() { … Read more
Try to set “app” or similar on here: UPDATE1 (Maybe it’s the problem) That project it’s not a new gradle project then maybe you imported wrong, you must import the project as “Import project (Eclipse ADT, Gradle…)” 4 solved Cannot run the code sample
This answer has some of the time zones to use in your getTimeZone method. Calendar curTime = new GregorianCalendar(); curTime.setTimeZone(TimeZone.getTimeZone(“Europe/Kiev”)); DateFormat dateFormat = new SimpleDateFormat(“HH:mm”); dateFormat.setCalendar(curTime); String time = dateFormat.format(curTime.getTime()); System.out.println(time); Output: 19:22 1 solved Java gives me wrong time every time i try to get it [closed]
bat files cannot be converted directly to jar files. But you can implement bat file logic in a java application, using, for instance Apache Commons Exec and when it is compiled, package it as a jar file. 1 solved How to execute a .bat file with java program? [closed]
Abdul’s answer is great, but it can be really slow when creating new objects of class Color thousands of times. The simplest way would be: int rgb = (red << 16 | green << 8 | blue); solved Converting Red, Green and Blue to RGB
SVN also can fullfill your needs. If you are using eclipse just incorporate SVN URL. You will get easy options to create branchs there solved Best source control for maintaining devel. and prod. versions of a project [closed]
Suppose x is the number you wish to reduce the precision of and bits is the number of significant bits you wish to retain. When bits is sufficiently large and the order of magnitude of x is sufficiently close to 0, then x * (1L << (bits – Math.getExponent(x))) will scale x so that the … Read more
Adding onto what everybody else said. A normal class method you would have to instantiate the object as follows. If you have a class called ClassExample with a method testMethod You would have to do the following to call it ClassExample example = new ClassExample(); example.testMethod()… if you have a static method you do not … Read more
Most of the java programs can easily be solved or atleast initiated by finding a pattern. So whats the pattern here? The pattern is that the relation between array index and the element at that place. Every index which has 0 in it has 1 so arr[0][0] is 1.See the pattern there? Every index which … Read more
You don’t have to use reflection at all. If you understand what type it is you like, you can use instanceof to get the specific class instance you care about. for(WordCategories.Noun n: nouns) { if(n instanceof WordCategories.Person) { // cast to WordCategories.Person and perform whatever action you like WordCategoriesPerson actualPerson = (WordCategories.Person) n; } } … Read more
The Date Javadoc notes A year y is represented by the integer y – 1900. A month is represented by an integer from 0 to 11; 0 is January, 1 is February, and so forth; thus 11 is December. To get the correct Date with the deprecated Date constructor, it would need to be something … Read more
You have to specify the package with keyword: Import “name_of_the_package”.*; i.e import UI.* In this way you will import every classs inside that package solved How to import a package from a different location?
I would suggest, inside the for loop with the call to showData(), that you add the following statement: if(cust[i]!=null) This will make sure that it never tries to read data from a space in the array where there is no customer. (Null pointer exceptions are caused by the program trying to access objects that have … Read more
From the docs: When an application is launched, the system creates a thread of execution for the application, called “main.” This thread is very important because it is in charge of dispatching events to the appropriate user interface widgets, including drawing events. In other words, ALL UI-related tasks occur on the same thread, and it … Read more