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How to convert CharSequence to String?
How can I convert a Java CharSequence to a String ?
3 Answers
3
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At runtime, find all classes in a Java application that extend a base class
...n, InstantiationException {
Reflections reflections = new Reflections("java.util");
Set<Class<? extends List>> classes = reflections.getSubTypesOf(java.util.List.class);
for (Class<? extends List> aClass : classes) {
System.out.println(aClass.getName());
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e.printStackTrace equivalent in python
... the occurred exception
but, I was trying to find the python equivalent of Java's e.printStackTrace() that exactly traces the exception to what line it occurred and prints the entire trace of it.
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Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
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Group a list of objects by an attribute : Java
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In Java 8:
Map<String, List<Student>> studlistGrouped =
studlist.stream().collect(Collectors.groupingBy(w -> w.stud_location));
sha...
Regular expression for matching latitude/longitude coordinates?
... is a gist that tests both, reported here also, for ease of access. It's a Java TestNG test. You need Slf4j, Hamcrest and Lombok to run it:
import static org.hamcrest.Matchers.*;
import static org.hamcrest.MatcherAssert.*;
import java.math.RoundingMode;
import java.text.DecimalFormat;
import lomb...
How to get milliseconds from LocalDateTime in Java 8
...poch) using the new LocalDate , LocalTime or LocalDateTime classes of Java 8.
9 Answers
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Sending a notification from a service in Android
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This type of Notification is deprecated as seen from documents:
@java.lang.Deprecated
public Notification(int icon, java.lang.CharSequence tickerText, long when) { /* compiled code */ }
public Notification(android.os.Parcel parcel) { /* compiled code */ }
@java.lang.Deprecated
public voi...
How to test if a double is an integer
...gative zero, then the result is the same as the argument." docs.oracle.com/javase/6/docs/api/java/lang/…
– Tim Schmelter
Mar 27 '12 at 22:27
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Why are interface variables static and final by default?
Why are interface variables static and final by default in Java?
15 Answers
15
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