Introduction
In Java, we can determine various things using these examples. These examples are very important for beginners.
Get Host Name in Java
This is used to determine the host name in Java.
Example
package test;
import java.net.*;
import java.io.*;
public class Test
{
public static void main(String[] args)
{
try
{
InetAddress adrs = InetAddress.getLocalHost();
byte[] ipAdrs = adrs.getAddress();
String hostname = adrs.getHostName();
System.out.println("Host Name is = "+hostname);
}
catch (UnknownHostException e)
{
}
}
}
Output
![get host name]()
Get Memory in Java
We can easily determine the memory size in Java using the following code.
Example
package test;
public class Test
{
public static void main(String[] args)
{
System.out.println("Total Memory"+Runtime.getRuntime().totalMemory());
System.out.println("Free Memory"+Runtime.getRuntime().freeMemory());
}
}
Output
![get memory]()
Get Current Month in Java
This example will show you how to get the current month in Java.
Example
package test;
import java.util.Calendar;
public class Test
{
public static void main(String[] args)
{
String[] months_name = {"JAN", "FEB",
"MAR", "APR", "MAY", "JUN", "JUL",
"AUG", "SEP", "OCT", "NOV",
"DEC"};
Calendar calndr = Calendar.getInstance();
String month = months_name[calndr.get(Calendar.MONTH)];
System.out.println("Month Name is : " + month);
}
}
Output
![get month name]()
Get Class Name in Java
This example will print the class name in Java.
Example
public class Test
{
public static void main(String args[])
{
new Test().hi();
}
void hi()
{
try
{
throw new Exception("Exception");
}
catch( Exception e )
{
System.out.println( e.getStackTrace()[1].getClassName());
}
}
}
Output
![get class name]()
Get Character from String
In this example we will remove characters from the string.
Example
package test;
public class Test
{
public void StringToChar()
{
String strng = "LAPTOP";
char[] chr_arr = strng.toCharArray();
for (char c : chr_arr)
System.out.println(c);
}
public static void main(String[] args)
{
new Test().StringToChar();
}
}
Output
![get char from string]()
Get Current Time in Java
This example will give you the current time in Java.
Example
package test;
public class Test
{
public static void main(String[] args)
{
java.util.Date current_time = new java.util.Date();
System.out.println(new java.sql.Time(current_time.getTime()));
}
}
Output
![get time]()
Get Difference of Two Dates
This example will determine the difference between two given dates in a number of days.
Example
package test;
import java.util.*;
public class Test
{
public static void main(String args[])
{
Test diff = new Test();
}
Test()
{
Calendar calndr1 = new GregorianCalendar();
Calendar calndr2 = new GregorianCalendar();
calndr1.set(2005, 12, 12);
calndr2.set(2013, 12, 12);
System.out.println("Days= "+Between(calndr1.getTime(),calndr2.getTime()));
}
public int Between(Date D1, Date D2)
{
return (int)( (D2.getTime() - D1.getTime()) / (1000 * 60 * 60 * 24));
}
}
Output
![difference of days]()
Summary
This article provided various examples using get in Java.