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Programming Articles
Page 1555 of 2547
Display a percentage in Java
To display a percentage in Java, use the following DecimalFormat.DecimalFormat decFormat = new DecimalFormat("#%");Since, we have used the DecimalFormat class, therefore do not forget to import the following package −import java.text.DecimalFormat;Now, let us learn how to display percentage −decFormat.format(0.80) decFormat.format(-0.19) decFormat.format(1.88)The above will be displayed as −80% -19% 188%The following is the complete example −Exampleimport java.text.DecimalFormat; public class Demo { public static void main(String[] argv) throws Exception { DecimalFormat decFormat = new DecimalFormat("#%"); System.out.println(decFormat.format(0.80)); System.out.println(decFormat.format(-0.19)); ...
Read MoreDisplay a currency value in Java
To display a currency in Java, use the following DecimalFormat −DecimalFormat decFormat = new DecimalFormat("\u00a4#, ##0.00");Since, we have used the DecimalFormat class, therefore do not forget to import the following package −import java.text.DecimalFormat;Now, let us learn how to display percentage −decFormat.format(877.80) decFormat.format(8.19) decFormat.format(9897.88)The above will be displayed as −$877.80 $8.19 $9, 897.88The following is the complete example −Exampleimport java.text.DecimalFormat; public class Demo { public static void main(String[] argv) throws Exception { // for currency DecimalFormat decFormat = new DecimalFormat("\u00a4#, ##0.00"); ...
Read MoreConvert Hex String to byte Array in Java
To convert hex string to byte array, you need to first get the length of the given string and include it while creating a new byte array.byte[] val = new byte[str.length() / 2];Now, take a for loop until the length of the byte array.for (int i = 0; i < val.length; i++) { int index = i * 2; int j = Integer.parseInt(str.substring(index, index + 2), 16); val[i] = (byte) j; }Let us see the complete example.Examplepublic class Demo { public static void main(String args[]) { String str = "p"; ...
Read MoreDisplay day number with SimpleDateFormat('d') in Java
To display the day number, use the SimpleDateFormat('d') as shown below −Format f = new SimpleDateFormat("d"); 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 −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 ...
Read MoreJava Program to convert byte[] array to String
To convert byte[] to String, firstly let us declare and initialize a byte array.// byte array byte[] arr = new byte[] {78, 79, 33};Now take a String and include the array in it.String str = new String(arr);Let us see the complete example to convert byte array to String.Examplepublic class Demo { public static void main(String args[]) { // byte array byte[] arr = new byte[] {78, 79, 33}; String str = new String(arr); // string System.out.println("String = "+str); } }OutputString = NO!
Read MoreConvert LinkedList to ArrayList in Java
A LinkedList can be converted into an ArrayList by creating an ArrayList such that the parameterized constructor of the ArrayList initialises it with the elements of the LinkedList.A program that demonstrates this is given as follows −Exampleimport java.util.ArrayList; import java.util.LinkedList; import java.util.List; public class Demo { public static void main(String[] args) { LinkedList l = new LinkedList(); l.add("Orange"); l.add("Apple"); l.add("Peach"); l.add("Guava"); l.add("Pear"); List aList = new ArrayList(l); System.out.println("The ArrayList elements are: "); for ...
Read MoreC++ Program to Find Quotient and Remainder
Quotient and Remainder are parts of division along with dividend and divisor.The number which we divide is known as the dividend. The number which divides the dividend is known as the divisor. The result obtained after the division is known as the quotient and the number left over is the remainder.dividend = divisor * quotient + remainderFor Example: If 15 is divided by 7, then 2 is the quotient and 1 is the remainder. Here, 15 is the dividend and 7 is the divisor.15 = 7 * 2 + 1A program to find quotient and remainder is as follows:Example#include ...
Read MoreJava Program to convert String to byte array
Here is our string.String str = "Asia is a continent!";Now let us use a byte array and the getBytes() method to fulfill our purpose.byte[] byteVal = str.getBytes();Now, if we will get the length of the array, it would return the length as shown in the complete example below −Examplepublic class Demo { public static void main(String args[]) { String str = "Asia is a continent!"; System.out.println(str); // converted to byte array byte[] byteVal = str.getBytes(); // getting the length System.out.println(byteVal.length); } }OutputAsia is a continent! 20
Read MoreDecimalFormat("###E0") in Java
DecimalFormat is a concrete subclass of NumberFormat that formats decimal numbers. Let us set DecimalFormat("###E0") and use the format() method as well.DecimalFormat decFormat = new DecimalFormat("##E0"); System.out.println(decFormat.format(-267.9965)); System.out.println(decFormat.format(8.19)); System.out.println(decFormat.format(9897.88));Since we have used DecimalFormat class in Java, therefore importing the following package is a must −import java.text.DecimalFormat;The following is the complete example −Exampleimport java.text.DecimalFormat; public class Demo { public static void main(String[] argv) throws Exception { DecimalFormat decFormat = new DecimalFormat("###E0"); System.out.println(decFormat.format(-267.9965)); System.out.println(decFormat.format(8.19)); System.out.println(decFormat.format(9897.88)); ...
Read MoreSimpleDateFormat('E, dd MMM yyyy HH:mm:ss Z') in Java
Using the SimpleDateFormat(“E, dd MMM yyyy HH:mm:ss Z”), wherein E is for Day of Week −// displaying current date and time Calendar cal = Calendar.getInstance(); SimpleDateFormat simpleformat = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss Z"); System.out.println("Today's date and time = "+simpleformat.format(cal.getTime()));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 −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 { ...
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