In Java, we can use String.format or DecimalFormat to format a double, both support Locale based formatting. 1. String.format .2%f For String.format, we can use %f to format a double, review the following Java example to format a double. FormatDouble1.java package com.mkyong.io.utils; import java.util.Locale; public class FormatDouble1 { public static void main(String[] args) { String […]
This example shows you how to display a percentage % in String.format. JavaStringFormat1.java package com.mkyong; public class JavaStringFormat1 { public static void main(String[] args) { String result = String.format("%d%", 100); System.out.println(result); } } Output Exception in thread "main" java.util.UnknownFormatConversionException: Conversion = ‘%’ at java.base/java.util.Formatter.checkText(Formatter.java:2732) at java.base/java.util.Formatter.parse(Formatter.java:2718) at java.base/java.util.Formatter.format(Formatter.java:2655) at java.base/java.util.Formatter.format(Formatter.java:2609) at java.base/java.lang.String.format(String.java:2897) Solution To display […]
This article shows you how to use the JDK1.5 String.format() and Apache Common Lang to left or right pad a String in Java. 1. String.format By default, the String.format() fills extra with spaces \u0020. Normally, we use replace() to pad with other chars, but it will replace the spaces in between the given string. JavaPadString1.java […]
This article shows you how to format a string in Java, via String.format(). Here is the summary. Conversion Category Description %b, %B general true of false %h, %H general hash code value of the object %s, %S general string %c, %C character unicode character %d integral decimal integer %o integral octal integer, base 8 %x, […]
Few examples to show you how to format java.time.LocalDateTime in Java 8. 1. LocalDateTime + DateTimeFormatter To format a LocalDateTime object, uses DateTimeFormatter TestDate1.java package com.mkyong.time; import java.time.LocalDateTime; import java.time.format.DateTimeFormatter; public class TestDate1 { public static void main(String[] args) { //Get current date time LocalDateTime now = LocalDateTime.now(); System.out.println("Before : " + now); DateTimeFormatter formatter […]
In Java, there are few ways to display double in 2 decimal places. Table of contents. 1. DecimalFormat("0.00") 2. String.format("%.2f") 3. BigDecimal 4. References Possible Duplicate How to round double / float value to 2 decimal places 1. DecimalFormat(“0.00”) We can use DecimalFormat("0.00") to ensure the number is round to 2 decimal places. DecimalExample.java package […]
