Student std = new Student();
When you run this target, it will say "[java] Listening for transport dt_socket at address: 5432", and stop here for you to debug....
long startTime = System.currentTimeMillis();
System.out.println("start getting super session: " + startTime);
long endTime = System.currentTimeMillis();
System.out.println("end getting super session: " + endTime);
System.out.println("time taken in seconds: " + (endTime - startTime)/1000);
System.out.println("time taken in mill seconds: " + (endTime - startTime));
| Letter | Date or Time Component | Presentation | Examples |
|---|---|---|---|
G | Era designator | Text | AD |
y | Year | Year | 1996; 96 |
M | Month in year | Month | July; Jul; 07 |
w | Week in year | Number | 27 |
W | Week in month | Number | 2 |
D | Day in year | Number | 189 |
d | Day in month | Number | 10 |
F | Day of week in month | Number | 2 |
E | Day in week | Text | Tuesday; Tue |
a | Am/pm marker | Text | PM |
H | Hour in day (0-23) | Number | 0 |
k | Hour in day (1-24) | Number | 24 |
K | Hour in am/pm (0-11) | Number | 0 |
h | Hour in am/pm (1-12) | Number | 12 |
m | Minute in hour | Number | 30 |
s | Second in minute | Number | 55 |
S | Millisecond | Number | 978 |
z | Time zone | General time zone | Pacific Standard Time; PST; GMT-08:00 |
Z | Time zone | RFC 822 time zone | -0800 |
System.out.println(System.getProperty("user.name"));
java.net.InetAddress localMachine = java.net.InetAddress.getLocalHost();
System.out.println(localMachine.getHostName());
public static void copyFile(File sourceFile, File destFile) throws IOException
{
if (!destFile.exists())
{
destFile.createNewFile();
}
FileChannel source = null;
FileChannel destination = null;
try
{
source = new FileInputStream(sourceFile).getChannel();
destination = new FileOutputStream(destFile).getChannel();
destination.transferFrom(source, 0, source.size());
}
finally
{
if (source != null)
{
source.close();
}
if (destination != null)
{
destination.close();
}
}
}
Link
public boolean XStream2XML(List importEntryList, String strOutXMLFilePath)
{
XStream xs = new XStream();
//by default, xstream will use class's full name
//you could use alias to avoid that
xs.alias("entryList", List.class);
xs.alias("importentry", ImportEntry.class);
xs.alias("attribute", Attribute.class);
try
{
FileOutputStream fs = new FileOutputStream(strOutXMLFilePath);
xs.toXML(importEntryList, fs);
//a simpler version
//String xml = xs.toXML(importEntryList);
fs.close();
}
catch (Exception e1)
{
//e1.printStackTrace();
return false;
}
return true;
}
2) Example of converting XML back to Java Object
String xml = "......"; Person newJoe = (Person)xstream.fromXML(xml);
| Operation | Command |
|---|---|
| To create a JAR file | jar cf jar-file input-file(s) |
| To view the contents of a JAR file | jar tf jar-file |
| To extract the contents of a JAR file | jar xf jar-file |
| To extract specific files from a JAR file | jar xf jar-file archived-file(s) |
| To run an application packaged as a JAR file (requires the Main-class manifest header) | java -jar app.jar |
| To invoke an applet packaged as a JAR file | <applet code=AppletClassName.class
archive="JarFileName.jar"
width=width height=height>
</applet> |