Regex match digits, comma and semicolon?
You almost have it, you just left out 0 and forgot the quantifier. word.matches(“^[0-9,;]+$”)
You almost have it, you just left out 0 and forgot the quantifier. word.matches(“^[0-9,;]+$”)
What you want to use is often called the “perp dot product”, that is, find the vector perpendicular to one of the vectors, and then find the dot product with the other vector. if(a.x*b.y – a.y*b.x < 0) angle = -angle; You can also do this: angle = atan2( a.x*b.y – a.y*b.x, a.x*b.x + a.y*b.y …
Ordering<Item> o = new Ordering<Item>() { @Override public int compare(Item left, Item right) { return Ints.compare(left.price, right.price); } }; return o.max(list); It’s as efficient as it can be: it iterates through the items of the list, and returns the first of the Items having the maximum price: O(n).
The only plausible explanation to this problem is there is an older version of HttpCore on the classpath (unless you also want to consider a possibility of green men from Mars messing with your computer remotely from a flying saucer). You can add this snippet to your code to find out what jar the class …
The easiest way of doing that is: File f = new File(“C:\\”); ArrayList<File> files = new ArrayList<File>(Arrays.asList(f.listFiles())); And if what you want is a list of names: File f = new File(“C:\\”); ArrayList<String> names = new ArrayList<String>(Arrays.asList(f.list()));
| is treated as an OR in RegEx. So you need to escape it: String[] separated = line.split(“\\|”);
Try to run java -cp ScrumTimeCaptureMaintenence.jar Main
If you have Jackson integeration with your application to serialize your bean to JSON format, then you can use Jackson anotation @JsonFormat to format your date to specified format. In your case if you need your date into yyyy-MM-dd format you need to specify @JsonFormat above your field on which you want to apply this …
Extend java.util.Properties, override both put() and keys(): import java.util.Collections; import java.util.Enumeration; import java.util.HashSet; import java.util.LinkedHashSet; import java.util.Properties; import java.util.HashMap; public class LinkedProperties extends Properties { private final HashSet<Object> keys = new LinkedHashSet<Object>(); public LinkedProperties() { } public Iterable<Object> orderedKeys() { return Collections.list(keys()); } public Enumeration<Object> keys() { return Collections.<Object>enumeration(keys); } public Object put(Object key, Object …
You can’t put a space in the middle of an identifier. Doing so ends that identifier and the parser assumes whatever comes next is a valid token in that statement’s context. There are few (if any) places that would be legal. Conventional Java value names would be: INDIA, // Or India, RUSSIA, // Russia, NORTH_AMERICA; …