Programming Articles - Page 2968 of 3366

To set a Date object to noon to the closest possible millisecond of the day, we will make sure that the hour is set to noon, and both the minutes, seconds, and milliseconds are set to zero. This precise setting can be achieved using the Calendar class in Java. By setting these specific fields, we can ensure that the time is 12:00:00.000 PM, providing the closest possible millisecond representation of noon. Returning a date set to noon to the closest possible millisecond of the day in Java is quite easy. Let's learn the following ways: ... Read More

To convert String to Float Object, you can use a method Float.valueOf() method or you can even achieve this without using the in-built method.Let us see both the examples.The following is an example that converts String to Float Object using Float.valueOf() method.Example Live Demopublic class Demo {    public static void main(String args[]) {       Float f = Float.valueOf("30.67");       System.out.println(f);    } }Output30.67Let us see another example.Example Live Demopublic class Demo {    public static void main(String args[]) {       Float f = new Float("45.88");       System.out.println(f);    } }Output45.88

The Float wrapper class provides methods to convert a Float object into various numeric primitive data types like short, int, float, and double in Java. This is particularly useful when handling float values and representing them in different numeric forms.This article will show two approaches to convert a Float object to numeric primitive types using the Float class methods. Using Float Wrapper Class Methods In this approach, we use predefined methods of the Float class, such as shortValue(), intValue(), floatValue(), and doubleValue(), to convert a Float object into various primitive types. These methods directly perform the required conversions. ... Read More

The Float.valueOf() method is used in Java to convert string to float.The following are our string values.String str1 = "100.5"; String str2 = "200.5";To convert the string value to float, try the method valueOf()float val1 = (Float.valueOf(str1)).floatValue(); float val2 = (Float.valueOf(str2)).floatValue();The following is the complete example with output.Example Live Demopublic class Demo {    public static void main(String args[]) throws Exception {       String str1 = "100.5";       String str2 = "200.5";       float val1 = (Float.valueOf(str1)).floatValue();       float val2 = (Float.valueOf(str2)).floatValue();       System.out.println("Multiplication = " + (val1 * val2));    } }OutputMultiplication = 20150.25

To display the month number, use the SimpleDateFormat(“M”)// displaying month number Format f = new SimpleDateFormat("M"); String strMonth = f.format(new Date()); System.out.println("Month Number = "+strMonth);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;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

Let us see how we can format date with SimpleDateFormat('MM/dd/yy')// displaying date Format f = new SimpleDateFormat("MM/dd/yy"); String strDate = f.format(new Date()); System.out.println("Current Date = "+strDate);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;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 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;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 = ... Read More

To display the day in week, use the SimpleDateFormat(“E”) as shown below −Format f = new SimpleDateFormat("E"); String strDayinWeek = f.format(new Date()); System.out.println("Day in week = "+strDayinWeek);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;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 display two-digit day number, use the SimpleDateFormat('dd') as shown below −// displaying two-digit day number f = new SimpleDateFormat("dd"); String strDay = f.format(new Date()); System.out.println("Day Number = "+strDay);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;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

In Java, verifying whether a string is a valid number is a common requirement in various applications. This process ensures that the string can be safely converted to a numerical type without causing runtime exceptions. To validate if a string can be converted to these types, we use the Integer.parseInt() and Float.parseFloat() methods, respectively. Problem Statement Given a string that may contain an integer or a float value, write a Java program to check whether it is valid number or not. Input "100" //string value Output 100 // ... Read More