[Solved] Split a string using white space java [duplicate]

The trivial answer is to split the string: String[] fragments = theString.split(” “, 6); Given that the fragments have specific meanings (and presumably you want some of them as non-string types), it might be more readable to use a Scanner: Scanner sc = new Scanner(theString); int x = sc.nextInt(); int y = sc.nextInt(); int width … Read more

[Solved] How do I properly test the char[ ] fields in my custom object for nulls, blanks, or empty? and Why do char[ ] indicate a length of 11?

String.valueOf().length() returns 11 because that is the number of digits/characters in the output (i.e. [@936016386 – an address – has 11 characters) solved How do I properly test the char[ ] fields in my custom object for nulls, blanks, or empty? and Why do char[ ] indicate a length of 11?

[Solved] Object Oriented Features in OO languages [closed]

simple answer: NO. here is a nice article that points out .. how the definition for a “real” OO language.. can not be done. There are different relationships between object orientation and computer languages: support of OO, ubiquitous use of OO, and enforcement of OO. Again, I’d recommend some effort to be unambiguous: e.g. “Java … Read more

[Solved] java -change boolean to yes no

This can be used to loop over the array and print “yes ” or “no ” : boolean[] newbirds = {false, true, true}; StringBuilder sb = new StringBuilder(); for(boolean bird : newbirds){ sb.append(bird? “yes ” : “no “); } System.out.println(sb.toString()); solved java -change boolean to yes no

[Solved] Replace Brackets on Array

You can try with array.stream().map(s->”\””+s+”\””).collect(Collectors.joining(“, “)); which will first surround each strings with quotes, then join them using , For Java 7 String delimiter = “, “; StringBuilder sb = new StringBuilder(); if (!array.isEmpty()) { sb.append(‘”‘).append(array.get(0)).append(‘”‘); } for (int i = 1; i < array.size(); i++) { sb.append(delimiter).append(‘”‘).append(array.get(i)).append(‘”‘); } String result = sb.toString(); 3 solved … Read more

[Solved] Check if Rectangle is between two points [closed]

Try the intersectsLine(Line2D l) method of java.awt.geom.Rectangle2D: Rectangle2D.Double rect = new Rectangle2D.Double(double x, double y, double w, double h); System.out.println(rect.intersectsLine(new Line2D.Double(double xA, double yA, double xB, double yB))); where xA,yA, xB,yB are the x and y coordinates, respectively, of points A and B which you wish to check if the rectangle is between. solved Check … Read more

[Solved] Testing a quadratic equation

Not sure what trouble you’re having. I wrote: public class Quad { public static void main(String[] args) { double a = Double.parseDouble(args[0]); double b = Double.parseDouble(args[1]); System.out.println(Math.abs(b/a – 200.0)); if (Math.abs(b/a – 200.0) < 1.0e-4) { System.out.println(“first one”); } else { System.out.println(“second one”); } } } And some output: animato:~/src/Java/SO$ java Quad 1 200 0.0 … Read more

[Solved] What does “if (targetStr.indexOf(value) == -1) ” condition mean in the below program, so we get correct output [closed]

-1 is returned when you don’t find the value. The loop says for each character (here called value) inside chArray try to locate another identical character in targetStr, if you don’t find another add the character to targetStr. So basically if you enter hello it would go like this: value = h -> try to … Read more

[Solved] ArrayIndexOutOfBoundsException in ten’s complement arithmetic implementation

Okay, after so much discussion and so many issues with your code I have totally revised your original code because you said you wanted to learn more. Among other improvements I have done the following changes: Meaninfgul class name Meaningful method and parameter names Convert repeated and often used constants like 50 and the array … Read more

[Solved] I have 100+ button in the page and I have to click on each button and to verify the link and page which opens after clicking

After you click the first button a new DOM is loaded, so click on the second (and third …) will end with StaleElementReferenceException. You need to get all the href values first and then try them one by one. Just tried on web bbc.com with this code: package navi; import java.util.ArrayList; import java.util.List; import org.junit.After; … Read more

[Solved] How i can use findViewById() in Android?

If you’re trying to use findViewById in Fragment, first of all make sure you’re using onCreateView() and you’re returning the view at the end. See the differences in here: Difference and uses of onCreate(), onCreateView() and onActivityCreated() in fragments Here is an example for that: @Override public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) { … Read more