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Does JavaScript have the interface type (such as Java's 'interface')?
I'm learning how to make OOP with JavaScript . Does it have the interface concept (such as Java's interface )?
13 Answer...
Printing HashMap In Java
...();
System.out.println(key + " " + value);
}
Update for Java8:
example.entrySet().forEach(entry->{
System.out.println(entry.getKey() + " " + entry.getValue());
});
If you don't require to print key value and just need the hashmap value, you can use others' suggesti...
What's the (hidden) cost of Scala's lazy val?
...he scala mailing list and gives implementation details of lazy in terms of Java code (rather than bytecode):
class LazyTest {
lazy val msg = "Lazy"
}
is compiled to something equivalent to the following Java code:
class LazyTest {
public int bitmap$0;
private String msg;
public String m...
Mail multipart/alternative vs multipart/mixed
...ine image
inline image
attachment
attachment
And the code is:
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.URLDataSource;
import javax.mail.BodyPart;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.interne...
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...
Lars KotthoffLars Kotthoff
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Printing a variable memory address in swift
...d you can obtain it with &varname
The function prints 0x7fff5fbfed98, an at this memory address you will find 289 (in hexadecimal notation). You can change its content with *intptr = 123456
Now, some other things to know.
String, in swift, is a primitive type, not an object.
CInt is a Swi...
Why cannot cast Integer to String in java?
...
No. Every object can be casted to an java.lang.Object, not a String. If you want a string representation of whatever object, you have to invoke the toString() method; this is not the same as casting the object to a String.
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OpenJDK availability for Windows OS [closed]
...rsion available to Windows OS? From the OpenJDK home page ( http://openjdk.java.net/ ) it redirects to Oracle Sun JRE for Windows machine.
...
Java `final` method: what does it promise?
In a Java class a method can be defined to be final , to mark that this method may not be overridden:
5 Answers
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How to append a newline to StringBuilder
...System.getProperty("line.separator") gives you system-dependent newline in java. Also from Java 7 there's a method that returns the value directly: System.lineSeparator()
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