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Created by alfa on April 11, 2011 21:40:51
Last update: April 11, 2011 21:40:51
Integer.bitCount counts the number of one-bits in the two's complement binary representation of the specified int value. Example code:
public class CountOnes {
public static void...
For long , there's Long.bitCount()
Created by alfa on April 08, 2011 14:42:23
Last update: April 08, 2011 14:42:23
public class TestInnerClass {
private stati...
Created by alfa on April 08, 2011 14:14:46
Last update: April 08, 2011 14:26:13
It's a lot easier to use swing JOptionPane to present a dialog. But if plain awt is what you want, this is the code. A Dialog is a Window object, so you paint it just like you would for a window.
import java.awt.*;
import java.awt.event.*;
...
Created by alfa on April 08, 2011 12:33:08
Last update: April 08, 2011 12:33:08
This example captures the screen of the current Java application window, instead of the full screen.
import java.io.*;
import java.awt.*;
import ...
Created by alfa on April 04, 2011 18:09:43
Last update: April 08, 2011 12:27:11
import java.awt.Graphics;
import java.awt.event...
Created by nogeek on April 07, 2011 21:07:55
Last update: April 07, 2011 21:07:55
You can use the javax.xml.transform.Transformer class to "transform" an XML stream (string in this case) to a DOM tree - effectively parsing the XML string.
import java.io.*;
import javax.xml.transform.Tr...
Created by nogeek on April 07, 2011 20:54:17
Last update: April 07, 2011 20:54:17
Use javax.xml.parsers.DocumentBuilder to parse xml. DocumentBuilder.parse() takes:
java.io.File
org.xml.sax.InputSource
java.io.InputStream
java.lang.String as a URI to an XML document
Example code:
import java.io.*;
import javax.xml.parsers.Docu...
Created by alfa on April 06, 2011 12:48:44
Last update: April 06, 2011 12:48:44
package com.demo.io;
import java.io.*;
...
Created by Dr. Xi on April 05, 2011 08:34:17
Last update: April 05, 2011 08:35:06
The Java servlet API does not provide a getStatus method for HttpServletResponse until version 3.0. This is a wrapper that provides getStatus for servlet API 2.5 and older. You have to override 4 methods because sendError etc. does not call setStatus .
import javax.servlet.*;
import javax.servlet.ht...
You can plug it in a servlet filter like this:
public void doFilter(ServletRequest req,
...
Created by alfa on April 04, 2011 16:05:41
Last update: April 04, 2011 16:05:41
import java.awt.*;
import java.awt.event.*;
...
