Java code to check if string is number This code checks whether the given string is numeric is not. publicclassIsStringNumeric{publicstaticvoidmain(String[]args){// We have initialized a string variable with double valuesString str1="1248.258";// We have initialized a Boolean variable and//...
To check if a String is numeric in Java, you can use the isNumeric method of the StringUtils class from the org.apache.commons.lang3 library. Here's an example: String str = "12345"; boolean isNumeric = StringUtils.isNumeric(str); If the str variable contains a numeric value, the is...
Learn: How to check whether a given string is empty or not using a java program? In this program we will use String.isEmpty() method to check given string is empty or not? String.isEmpty()It is a predefined (built-in) method of String class in Java, it return...
In this tutorial, we shall see how to check if two Strings are equal in Java using the method String.equals(String anotherString). Also, we shall go through an example Java program to ignore the case of the characters in the string, and check if two Strings are equal. Examples 1. Che...
publicstaticStringusingTruncateMethod(String text,intlength){returnStringUtils.truncate(text, length); }Copy 4. Guava Library In addition to using core Java methods and the Apache Commons library to truncate aString, we can also useGuava. Let’s begin by adding the Guavadependencyto ourpom.xmlfil...
Few Java examples to show you how to check if a String is numeric. 1. Character.isDigit() Convert a String into achararray and check it withCharacter.isDigit() NumericExample.java packagecom.mkyong;publicclassNumericExample{publicstaticvoidmain(String[] args){ ...
How check the String is empty or not? The following Java program check whether the string is empty or not. class TestClass { public static void main (String[] args){ String str = "Halo World!"; int len = str.length(); if(len<=0) System.out.println("String is Empty !!"); else...
How to Return a String in Java? There are two ways to return a String in Java: Without using a return statement Using a return statement We will now check out both of the mentioned methods one by one! Method 1: Return a String in Java Without Using return Statement ...
This tutorial introduces whatStringUtilsis and how to utilize it in handling String in Java. StringUtilsis a class used to handle String and provides more utility methods than the JavaStringclass. This class does not belong to the Java package; instead, it belongs to theApache Commons Library....
Using theprint()Method to Print a String in Java In the code snippet given below, we have a string-type variable,str. To print the value of this variable for the user on the console screen, we will use theprint()method. We pass the text to be printed as a parameter to this method...