In line 34, as the trace says: window.getChildren().add(dot); either window or dot (or both) are not initialized by then. Hence the null pointer exception. 6 solved NullPointerException Error on simple program [duplicate]
I’m assuming you want ASCII letters and digits, but not Thai digits, Arabic letters and the like. AANNN is (?i)^[a-z]{2}[0-9]{3}$ ANEE is (?i)^[a-z][0-9][a-z0-9]{2}$ Explanation The ^ anchor asserts that we are at the beginning of the string [a-z] is what’s called a character class. It allows any chars between a and z. In a character … Read more
Your code is going to loop 1001 times, thus creating 1001 independent String-objects. s is a local variable inside the loop, thus the garbage collector is going to free the memory occupied by these no longer referenced instances as soon as the system needs the memory. Thus, I would not expect any memory issues. As … Read more
From what I can get from your question, you are most likely having trouble because you are doing some sort of count-down in the main (UI) Thread. This will definitely cause the app to freeze for the duration of the timer. Simply use a timer, and do something like this: //global variables private int currTime … Read more
after you’ve sorted the director list…. just take one director as an key value in outer loop and then start comparing each and every movie name in inner loop… How can I sort a List alphabetically? this would be helpful… do some searching next time….it is easy to find such solutions… 🙂 😉 3 solved … Read more
A new approach since Java’s Regex.Split() doesn’t seem to keep the delimiters in the result, even if they are enclosed in a capturing group: Pattern regex = Pattern.compile( “[+-]? # Match a number, starting with an optional sign,\n” + “\\d+ # a mandatory integer part,\n” + “(?:\\.\\d+)? # optionally followed by a decimal part\n” + … Read more
You could just use a cast to an int like so: int integerNumber = (int) yourFloat; 4 solved How do I convert float to integer? [duplicate]
I think what you are needing are getters/setters.I hope the following link can answer all you need to know: Tutorial solved Passing Values from Different Source Code [closed]
Looks like you just System.out.println()d a Java byte[]. Try using Arrays#toString(byte[]). 1 solved Somebody heard about this encryption? [closed]
The LocalTime class represents a time of day, without any date component. That seems to be the class you want to use here. You can create LocalTime objects with LocalTime.of, and compare them with isBefore and isAfter. Like this. LocalTime sevenThirty = LocalTime.of(7,30); LocalTime eightTwenty = LocalTime.of(8,20); LocalTime nineOClock = LocalTime.of(9,0); if(eightTwenty.isAfter(sevenThirty) && eightTwenty.isBefore(nineOClock)) { … Read more
double* ptr; ptr = (double*)malloc(10*_R_CONST*sizeof(double)+2048); This is the C way of allocating an array dynamically at runtime, the Java equivalent is double[] ptr = new double[10*_R_CONST+256]; (Note that Java does not need the sizeof(double) factor, since it allocates objects, not bytes. For the same reason, the 2048 byte buffer shrinks to 256 doubles.) Similar, the … Read more
It’s not possible to validate XML with regular expressions. XML is not a regular language. Use an XML parser to try to parse the string as XML or else validate the XML document against a schema, for example a DTD or XSD file. solved regular expression to check if string is valid XML [closed]
A lot depends on the hardware resources available. That is to say, the specs, cpu, ram, etc and number of concurrent requests. Otherwise there should be no conflicts since weblogic server ports can be configured during creation of servers and the default admin port runs on 7001. The IIS default port is 80. So simultaneous … Read more
Just make the double quotes in the xpath to single quotes. //*[@id=”Email”] to //*[@id=’Email’] //*[@id=”next”] to //*[@id=’next’] E:\\ChromeDriver to E:/ChromeDriver.exe Your scrips works fine after this. 8 solved I can get error in this code [closed]
You can declare multiple variables of the same type in a for-loop: public static int seven_sum(int num) { int sum = 0; for (int i = 7, iterations = 0; iterations < (number of iterations); i = i * 10 + i, iterations++) { sum = sum + i; } return sum; } solved Stop … Read more