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Articles by Samual Sam
Page 76 of 151
Apply modulus operator to floating-point values in Java
To apply modulus (%) operator to floating-point values in an effortless task. Let us see how.We have the following two values −double one = 9.7; double two = 1.2;Let us now apply the modulus operator −one % twoThe following is the complete example that displays the output as well −Examplepublic class Demo { public static void main(String args[]) { double one = 9.7; double two = 1.2; System.out.println( one % two ); } }Output0.09999999999999964
Read MoreC++ Program to Find Largest Number Among Three Numbers
The largest number among three numbers can be found using if statement multiple times. This is given in a program as follows −Example#include using namespace std; int main() { int a = 5 ,b = 1 ,c = 9; if(a>b) { if(a>c) cout
Read MoreConvert byte primitive type to Byte object in Java
To convert byte primitive type to Byte object, use the Byte constructor.Here is our byte primitive type.byte b = 100;Now let us convert it to Byte object.Byte res = new Byte(b);Let us see the complete example.Examplepublic class Demo { public static void main(String[] args) { byte b = 100; Byte res = new Byte(b); System.out.println(res); } }Output100
Read MoreDisplay Day Name of Week using Java Calendar
For using Calendar class, import the following package.import java.util.Calendar;Using the Calendar class, create an object.Calendar calendar = Calendar.getInstance();Now, create a string array of the day names.String[] days = new String[] { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };Display the day name.days[calendar.get(Calendar.DAY_OF_WEEK) - 1]The following is the final example.Exampleimport java.util.Calendar; public class Demo { public static void main(String[] args) { Calendar calendar = Calendar.getInstance(); System.out.println("Day: " + (calendar.get(Calendar.DATE))); System.out.println("Month: " + (calendar.get(Calendar.MONTH) + 1)); System.out.println("Year: " + (calendar.get(Calendar.YEAR))); String[] days = new String[] { ...
Read MoreJava program to print the initials of a name with last name in full
When the full name is provided, the initials of the name are printed with the last name is printed in full. An example of this is given as follows −Full name = Amy Thomas Initials with surname is = A. ThomasA program that demonstrates this is given as follows −Exampleimport java.util.*; public class Example { public static void main(String[] args) { String name = "John Matthew Adams"; System.out.println("The full name is: " + name); System.out.print("Initials with surname is: "); int len = name.length(); name ...
Read MoreJava Program to add leading zeros to a number
To add leading zeros to a number, you need to format the output. Let’s say we need to add 4 leading zeros to the following number with 3 digits.int val = 290;For adding 4 leading zeros above, we will use %07d i.e. 4+3 = 7. Here, 3, as shown above, is the number with 3 digits.String.format("%07d", val);The following is the final example.Exampleimport java.util.Formatter; public class Demo { public static void main(String args[]) { int val = 290; System.out.println("Integer: "+val); String formattedStr = String.format("%07d", val); System.out.println("With leading zeros = " + formattedStr); } }OutputInteger: 290 With leading zeros = 0000290
Read MoreGet the intersection of two sets in Java
To get the intersection of two sets, use the retainAll() method. Here are out two set −First set −HashSet set1 = new HashSet (); set1.add("Mat"); set1.add("Sat"); set1.add("Cat");Second set −HashSet set2 = new HashSet (); set2.add("Mat"); set2.add("Cat"); set2.add("Fat"); set2.add("Hat");Get the intersection −set1.retainAll(set2);The following is an example to get the intersection of two sets −Exampleimport java.util.*; public class Demo { public static void main(String args[]) { HashSet set1 = new HashSet (); HashSet set2 = new HashSet (); set1.add("Mat"); set1.add("Sat"); set1.add("Cat"); ...
Read MoreDisplay default initial values of DataTypes in Java
To display default initial values of a datatype, you need to just declare a variable of the same datatype and display it.The following is a Java program to display initial values of DataTypes.Examplepublic class Demo { boolean t; byte b; short s; int i; long l; float f; double d; void Display() { System.out.println("boolean (Initial Value) = " + t); System.out.println("byte (Initial Value) = " + b); System.out.println("short (Initial Value) = " + s); System.out.println("int (Initial Value) = " + ...
Read MoreConvert Java String Object to Boolean Object
A string object can be created in Java using the string literal.String myStr = “Amit”;Another way to create a string object is using the new keyword.String myStr = new String("Hello!");We have used the first method to create a string object.String str = "true";Now, use the valueOf() method to convert String Object to Boolean Object. We have used this method on Boolean object.Boolean bool = Boolean.valueOf(str);Let us now see the complete example to show how to convert String Object to Boolean Object.Examplepublic class Demo { public static void main(String[] args) { String str = "true"; ...
Read MoreFormat hour in k (1-24) format in Java
The “k” format in Java Date is used to format hour in 1-24 format. Use SimpleDateFormat("k") to get the same format.// displaying hour in k format simpleformat = new SimpleDateFormat("k"); String strHour = simpleformat.format(new Date()); System.out.println("Hour in k format = "+strHour);Above, we have used the SimpleDateFormat class, therefore the following package is imported.import java.text.SimpleDateFormat;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 ...
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