This article will explain how decimal fixed-point and floating-point arithmetic work in Python, which is useful for performing accurate calculations in various applications. Numbers in Python can be stored in two ways: floating-point and decimal fixed-point. Floating-point numbers are fast but can sometimes be incorrect because of how computers store them. On the other hand, Decimal fixed-point numbers are more accurate and useful when working with precise calculations.  By the end of this article, you will understand how both types of numbers work, when to use them, and how to write programs using them. Floating-Point Arithmetic The following example will ... Read More

Use the ‘a’ date conversion character to display short day-in-week.System.out.printf("Localized short day name = %ta/%Ta", d, d);Above, d is a date object −Date d = new Date();The following is an example −Example Live Demoimport java.util.Date; import java.text.DateFormat; import java.text.SimpleDateFormat; public class Demo { public static void main(String[] args) throws Exception { Date d = new Date(); DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss a"); String format = dateFormat.format(d); System.out.println("Current date and time = " + ... Read More

The following is an example.Example Live Demoimport java.util.Date; import java.text.DateFormat; import java.text.SimpleDateFormat; public class Demo { public static void main(String[] args) throws Exception { Date d = new Date(); DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss a"); String format = dateFormat.format(d); System.out.println("Current date and time = " + format); System.out.printf("Localized day name = %tA/%TA", d, d); } }OutputCurrent date and time = 26/11/2018 11:44:44 AM Localized day name = Monday/MONDAY

Set width in output as shown below. Here, %10 sets a 10 character fieldSystem.out.printf("d1 = %10.2f d2 = %8g", d1, d2);Above, the value after the decimal is for decimal places i.e. 5.3 is for 3 decimal places −System.out.printf("d1 = %5.3f d2 = %2.5f", d1, d2);The following is an example −Example Live Demopublic class Demo { public static void main(String[] args) throws Exception { double d1 = 399.8877; double d2 = 298.87690; System.out.printf("d1 = %10.2f d2 = %8g", d1, d2); System.out.printf("d1 = %5.3f d2 = %2.5f", d1, d2); } }Outputd1 = 399.89 d2 = 298.877 d1 = 399.888 d2 = 298.87690

First, we have taken a double variable and displayed it twice.double d = 399.8877; System.out.printf("d1 = %2$f d2 = %1$g", d, d);After that, we have formatted numerical int data −int val1 = 90, val2 = 35, val3 = 88, val4 = 600; System.out.printf("val1 = %d, val2 = %x, val3 = %o, val4 = %d", val1, val2, val3, val4); System.out.printf("val2 = %4$d, val2 = %3$d, val3 = %2$o, val4 = %1$d", val1, val2, val3, val4);Above, we have displayed %o for octal, %x for hexadecimal, %d for integer, etc.The following is the complete example −Example Live Demopublic class Demo {    public static ... Read More

To format year in yyyy format is like displaying the entire year. For example, 2018.Use the yyyy format like this −SimpleDateFormat("yyyy");Let us see an example −// year in yyyy format SimpleDateFormat simpleformat = new SimpleDateFormat("yyyy"); String strYear = simpleformat.format(new Date()); System.out.println("Current Year = "+strYear);Above, we have used the SimpleDateFormat class, therefore the following package is imported −import java.text.SimpleDateFormat;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 ... Read More

To format year in yy format is like displaying year as 01, 02, 03, 04, etc. For example, 18 for 2018.Use the yy format like this.SimpleDateFormat("yy");Let us see an example −// year in yy format SimpleDateFormat simpleformat = new SimpleDateFormat("yy"); String strYear = simpleformat.format(new Date()); System.out.println("Current Year = "+strYear);Above, we have used the SimpleDateFormat class, therefore the following package is imported −import java.text.SimpleDateFormat;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 ... Read More

Use the zzzz format like this for TimeZone.SimpleDateFormat("zzzz");Let us see an example −// displaying timezone in zzzz format simpleformat = new SimpleDateFormat("zzzz"); String strTimeZone = simpleformat.format(new Date()); System.out.println("TimeZone in zzzz format = "+strTimeZone);Above, we have used the SimpleDateFormat class, therefore the following package is imported −import java.text.SimpleDateFormat;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(); ... Read More

The z format means General Time Zone. We will use it like this.SimpleDateFormat("z");Let us see an example −// displaying timezone in z format SimpleDateFormat simpleformat = new SimpleDateFormat("z"); String strTimeZone = simpleformat.format(new Date()); System.out.println("TimeZone in z format = "+strTimeZone);Above, we have used the SimpleDateFormat class, therefore the following package is imported −import java.text.SimpleDateFormat;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 ... Read More

The ss format for seconds is like representing seconds 01, 02, 03, 04, etc. We will use it like this.SimpleDateFormat("ss");Let us see an example −// displaying seconds in ss format simpleformat = new SimpleDateFormat("ss"); String strSeconds = simpleformat.format(new Date()); System.out.println("Seconds in ss format = "+strSeconds);Above, we have used the SimpleDateFormat class, therefore the following package is imported −import java.text.SimpleDateFormat;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 ... Read More