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How to visualize an XML schema? [closed]
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The open source command line java application xsdvi creates an interactive diagram in SVG format from an XML Schema Definition. The generated SVG file can be displayed by a modern web browser where the user can expand and collapse the tree by mouse click...
In Python, how do I indicate I'm overriding a method?
In Java, for example, the @Override annotation not only provides compile-time checking of an override but makes for excellent self-documenting code.
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How to create a file in Android?
...ing to the docs, calling close will perform a flush first. docs.oracle.com/javase/6/docs/api/java/io/…
– Eliot
Aug 19 '13 at 22:36
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What does it mean: The serializable class does not declare a static final serialVersionUID field? [d
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From the javadoc:
The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object ha...
Convert String to double in Java
How can I convert a String such as "12.34" to a double in Java?
15 Answers
15
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Which is best way to define constants in android, either static class, interface or xml resource?
... your project significantly.
static final constants are compiled into the java bytecode; project resources are compiled into a binary format within the apk. Accessing either is extremely efficient... if there is a difference between the two, it is trivial at most.
There isn't a set rule on how you...
StringUtils.isBlank() vs String.isEmpty()
...("bob") = false
StringUtils.isEmpty(" bob ") = false
Warning: In java.lang.String.isBlank() and java.lang.String.isEmpty() work the same except they don't return true for null.
java.lang.String.isBlank() (since Java 11)
java.lang.String.isEmpty()
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Remove Elements from a HashSet while Iterating [duplicate]
So, if I try to remove elements from a Java HashSet while iterating, I get a ConcurrentModificationException . What is the best way to remove a subset of the elements from a HashSet as in the following example?
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How to pass an object from one activity to another on Android
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Serializable is a standard Java interface. You simply mark a class Serializable by implenting the interface, and Java will automatically serialize it in certain situations. Parcelable is an Android specific interface where you implement the serializa...
Why is ArrayDeque better than LinkedList
I am trying to to understand why Java's ArrayDeque is better than Java's LinkedList as they both implement Deque interface.
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