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Checking for a null int value from a Java ResultSet
In Java I'm trying to test for a null value, from a ResultSet, where the column is being cast to a primitive int type.
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Package structure for a Java project?
Whats the best practice for setting up package structures in a Java Web Application?
7 Answers
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Copying text to the clipboard using Java
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This works for me and is quite simple:
Import these:
import java.awt.datatransfer.StringSelection;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
And then put this snippet of code wherever you'd like to alter the clipboard:
String myString = "This text will be cop...
Passing a String by Reference in Java?
... it doesn't allocate new String objects every time. In fact when you write Java code like s = "Hello " + name, then the compiler will generate byte code which creates a StringBuilder and calls append() two times.
– Aaron Digulla
May 7 '19 at 13:36
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Use of Java's Collections.singletonList()?
What is the use of Collections.singletonList() in Java? I understand that it returns a list with one element. Why would I want to have a separate method to do that? How does immutability play a role here?
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What is the volatile keyword useful for?
At work today, I came across the volatile keyword in Java. Not being very familiar with it, I found this explanation .
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Get current batchfile directory
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Dan Dascalescu
98.2k3636 gold badges263263 silver badges333333 bronze badges
answered Jun 12 '13 at 11:13
StolegStol...
What is the meaning of erb?
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Mark AmeryMark Amery
98.9k4848 gold badges336336 silver badges379379 bronze badges
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Setting design time DataContext on a Window is giving a compiler error?
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Jon EricksonJon Erickson
98.1k3636 gold badges131131 silver badges169169 bronze badges
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Eclipse error: 'Failed to create the Java Virtual Machine'
...ms\jdk1.6\bin lines.
Also, a general recommendation: set -Dosgi.requiredJavaVersion=1.6, not 1.5.
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