Sun Java moved to the Partner repository
For Ubuntu 10.04 LTS, the sun-java6 packages have been dropped from the Multiverse section of the Ubuntu archive. It is recommended that you use openjdk-6 instead.
If you can not switch from the proprietary Sun JDK/JRE to OpenJDK, you can install sun-java6 packages from the Canonical Partner Repository. You can configure your system to use this repository via command-line:
add-apt-repository "deb http://archive.canonical.com/ lucid partner"
相关文档：
public static void CentreWnd(Shell shell){
int width = shell.getMonitor().getClientArea().width;
int height = shell.getMonitor().getClientArea().height;
int x = shell.getSize().x;
int y = shell.getSize().y;
if (x > width) {
shell.getSize().x = width;
}
if (y > height) ......
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
/**
* 求质数和，
* 如:
* sum(1)=2=2
* sum(2)=2+3=5
* sum(3)=2+3+5=10
* sum(4)=2+3+5+7=17
& ......
public class EchoDefaultSystemEncoding
{
public static void main(String[] args)
{
String encoding = System.getProperty("file.encoding");
System ......
没有必要用一堆绕口的形容词来描述什么叫多态，只举出几个关键点。
设：gun为父类，shootgun和pistol为gun的子类。
Java:
class gun {
void shoot() {
......
