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 −Example Live Demoimport 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 More

In this article, we will learn how to format date and time in Java using the Formatter and Calendar classes. The Formatter class allows for flexible string formatting, and the Calendar class is useful for retrieving and manipulating date and time values. We will use these classes to display the current hour, minute, and AM/PM marker. Problem StatementGiven a Calendar instance, write a Java program to display the current hour, minute, and AM/PM marker using the Formatter class.Input The program fetches the current date and time using the Calendar class.Output Current date and time: Mon Nov 26 07:41:35 UTC 2018 ... Read More

Firstly, create a Formatter and a Calendar object.Formatter f = new Formatter(); Calendar c = Calendar.getInstance();To display hour using Formatter class, use the ‘l’ conversion a character −f = new Formatter(); System.out.println(f.format("Hour: %tl", c));To display minute using Formatter class, use the ‘M’ conversion character −f = new Formatter(); System.out.println(f.format("Minute: %1$tM", c));The following is an example −Example Live Demoimport java.util.Calendar; import java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); Calendar c = Calendar.getInstance(); ... Read More

Firstly, create a Formatter and Calendar object.Formatter f = new Formatter(); Calendar cal = Calendar.getInstance();Now display the current date and time. We have shown the date here in both lowercase and uppercase −f = new Formatter(); System.out.println(f.format("Date and Time (lowercase): %tc", cal)); f = new Formatter(); System.out.println(f.format("Date and Time (uppercase): %Tc", cal));The following is an example −Example Live Demoimport java.util.Calendar; import java.util.Formatter; public class Demo { public static void main(String args[]) { Formatter f = new Formatter(); Calendar cal = Calendar.getInstance(); ... Read More

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 −Example Live Demoimport 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 More

To work with SimpleDateFormat class in Java, import the following package.import java.text.SimpleDateFormat;Now, set the format with SimpleDateFormat(“m”) to display minutes.Format f = new SimpleDateFormat(‘”m”);Now, get the minutes in a string.String strMinute = f.format(new Date());The following is an example −Example Live Demoimport 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 More

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 −Example Live Demoimport 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 More

Use the ‘b’ conversion character for month name in Java.Use the ‘m’ conversion character for month number in Java.Here, we are using Formatter and Calendar class, therefore import the following packages.import java.util.Calendar; import java.util.Formatter;The following is an example to display month name and number −Example Live Demoimport 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 More

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the system start time, use the getStartTime() method −new Date(runtimeMX.getStartTime()The following is an example −Example Live Demoimport 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("System Start Time = "+new Date(runtimeMX.getStartTime())); } }OutputSystem Start Time = Mon Nov 26 07:03:19 UTC 2018

RuntimeMXBean in the management interface for the runtime system of the Java virtual machine.RuntimeMXBean runtimeMX = ManagementFactory.getRuntimeMXBean();To get the boot path, use the getBootClassPath() method −runtimeMX.getBootClassPath()The following is an example −Example Live Demoimport 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());       System.out.println("Boot Class path = "+runtimeMX.getBootClassPath());     } }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 Boot Class path = /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/resources.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/rt.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/sunrsasign.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/jsse.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/jce.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/charsets.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141- 1.b16.fc26.x86_64/jre/lib/jfr.jar:/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.141-1.b16.fc26.x86_64/jre/classesRead More