Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles by karthikeya Boyini
Page 67 of 143
Get ClassPath from RuntimeMXBean in Java
RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the class path, use the getClassPath() method −runtimeMX.getClassPath()The following is an example −Exampleimport java.lang.management.ManagementFactory; import java.lang.management.RuntimeMXBean; import java.util.Date; public class Demo { public static void main(String args[]) throws Exception { RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean(); System.out.println("Class path = "+runtimeMX.getClassPath()); } }OutputClass path = /home/cg/root/GNUstep/Library/Libraries/Java:/usr/GNUstep/Local/Library/Libraries/Java:/usr/GNUstep/System/ Library/Libraries/Java::/usr/share/java/mysql-connector-java.jar:.:/var/www/html/lib:/var/www/html/lib/dom4j- 1.6.jar:/var/www/html/lib/guava-18.0.jar:/var/www/html/lib/jackson-all.jar:/var/www/html/lib/jaxen- 1.1.4.jar:/var/www/html/lib/jcommon.jar:/var/www/html/lib/jdom2- 2.0.5.jar:/var/www/html/lib/jfreechart.jar:/var/www/html/lib/junit-4.12.jar:/var/www/html/lib/spymemcached- 2.10.3.jar:/var/www/html/lib/stax-1.2.0.jar:/var/www/html/lib/xstream-1.4.7.jar:/var/www/html/lib/gson- 2.3.1.jar:/var/www/html/lib/hamcrest-core-1.3.jar
Read MoreDisplay hour with SimpleDateFormat("H") in Java
To work with SimpleDateFormat class in Java, import the following package.import java.text.SimpleDateFormat;Now, set the format with SimpleDateFormat(“H”) to display hour in a day.Format f = new SimpleDateFormat("H");Now, get the hour −String strHour = f.format(new Date());The following is an example −Exampleimport java.text.Format; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Calendar; public class Demo { public static void main(String[] args) throws Exception { // displaying current date and time Calendar cal = Calendar.getInstance(); SimpleDateFormat simpleformat = new SimpleDateFormat("dd/MMMM/yyyy hh:mm:s"); ...
Read MoreLeft pad an integer in Java with zeros
Let us see an example first to understand how an integer looks with left padding −888 //left padding with spaces 0000000999 //left padding with 7 zerosLet us see an example to left pad a number with zero −Examplepublic class Demo { public static void main(String[] args) { int val = 9899; System.out.println(String.format("%05d",val)); } }Output09899Let us see another example that pads a greater number of zeros −Examplepublic class Demo { public static void main(String[] args) { int val = 9899; System.out.println(String.format("%010d", val)); } }Output0000009899
Read MoreDisplay minutes with SimpleDateFormat('mm') in Java
To work with SimpleDateFormat class in Java, import the following package.import java.text.SimpleDateFormat;Now, set the format with SimpleDateFormat(“mm”) to display minutes in two-digits.Format f = new SimpleDateFormat(‘”mm”);Now, get the minutes in a string.String strMinute = f.format(new Date());The following is an example −Exampleimport java.text.Format; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Calendar; public class Demo { public static void main(String[] args) throws Exception { // displaying current date and time Calendar cal = Calendar.getInstance(); SimpleDateFormat simpleformat = new SimpleDateFormat("dd/MMMM/yyyy hh:mm:s"); ...
Read MoreFormat Calendar with String.format() in Java
Firstly, consider an object with date value.Object arrObj[] = { "Date", Calendar.getInstance() };After that, use the String.format() method to format Calendar and display the date.The following is an example.Exampleimport java.util.Calendar; public class Demo { public static void main(String []args){ Object arrObj[] = { "Date", Calendar.getInstance() }; System.out.println("Formatting Date..."); System.out.println(String.format("%1$s = %2$tY %2$tm %2$te", arrObj)); } }OutputFormatting Date... Date = 2018 11 17
Read MoreMake the first letter caps and the rest lowercase in Java
The following is an example −Examplepublic class Demo { public static void main(String[] args) { String str = "laptop"; System.out.println("Original String = " +str); // letter one String strOne = str.substring(0,1).toUpperCase(); // remaining letters String strTwo = str.substring(1).toLowerCase(); System.out.println("Resultant String = "+strOne + strTwo); } }OutputOriginal String = laptop Resultant String = Laptop
Read MoreJava Program to get full day name
To display the full day name, use the SimpleDateFormat(“EEEE”) as shown below −// displaying full-day name f = new SimpleDateFormat("EEEE"); String str = f.format(new Date()); System.out.println("Full Day Name = "+str);Since, we have used the Format and SimpleDateFormat class above, therefore import the following packages. With that, we have also used the Date.import java.text.Format; import java.text.SimpleDateFormat; import java.util.Date;Exampleimport java.text.Format; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Calendar; public class Demo { public static void main(String[] args) throws Exception { // displaying current date and time Calendar cal = Calendar.getInstance(); SimpleDateFormat simpleformat = new ...
Read MoreJava Program to display date and time information in lowercase
Firstly, create a Formatter and a Calendar object.Formatter f = new Formatter(); Calendar c = Calendar.getInstance();To display complete date and time information use the ‘c’ conversion character. However, to display it in lowercase, use ‘tc’ −f = new Formatter(); System.out.println(f.format("Date and Time (lowercase): %tc", cal));The following is an example −Exampleimport java.util.Calendar; import java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); Calendar cal = Calendar.getInstance(); System.out.println("Current date and time: "+cal.getTime()); ...
Read MoreParse decimal string to create BigInteger in Java
To parse the decimal string to create BigInteger, just set the decimal string in the BigInteger.Here is our BigInteger.BigInteger one; String decStr = "687879"; one = new BigInteger(decStr);Let us see another example −Exampleimport java.math.*; public class Demo { public static void main(String[] args) { BigInteger one, two; String decStr = "4373427"; one = new BigInteger("250"); two = new BigInteger(decStr); System.out.println("Result (BigInteger) : " +one); System.out.println("Result (Parsing Decimal String) : " +two); } }OutputResult (BigInteger) : 250 Result (Parsing Decimal String) : 4373427
Read MoreJava Program to display previous day from GregorianCalender
For GregorianCalendar class, import the following package.import java.util.GregorianCalendar;Create an object.GregorianCalendar cal = (GregorianCalendar) GregorianCalendar.getInstance();Now, use the following field and add() method with a negative one (-1) to display the previous day.cal.add((GregorianCalendar.DATE), -1)Exampleimport java.util.Calendar; import java.util.GregorianCalendar; public class Demo { public static void main(String[] a) { GregorianCalendar cal = (GregorianCalendar) GregorianCalendar.getInstance(); System.out.println("Current date: " + cal.getTime()); // past date cal.add((GregorianCalendar.DATE), -1); System.out.println("Modified date (Previous Day): " + cal.getTime()); } }OutputCurrent date: Mon Nov 19 18:12:53 UTC 2018 Modified date (Previous Day): Sun Nov 18 18:12:53 UTC 2018
Read More