, str.replaceAll("java", "scala")); 2.2. Remove All Whitespaces The following Java program replaces all occurrences of whitespaces in a string with an empty string. String blog = "how to do in java"; Assertions.assertEquals("howtodoinjava", blog.replaceAll("\\s", "")); 3. ...
package com.howtodoinjava.demo.serialization; import java.io.*; import java.util.logging.Logger; public class DemoClass implements java.io.Serializable { private static final long serialVersionUID = 4L; //Default serial version uid private static final String fileName = "DemoClassBytes.ser"; /...
2.ArrayList.replaceAll()Example The following Java programs usereplaceAll()method to change all list items tolowercaseusing alambda expression. 2.1. Using Inline Expression We can use the inline lambda expressions in case we have to execute only a single statement. ArrayList<String>alphabets=newArray...
Of course,we can also use the regex-basedreplaceAll()method to achieve the same goal. Let’s take file2 as an example to see how it works: String resultReplaceAll = content2.replaceAll("[\\n\\r]", ""); assertEquals("A, B, C, D, E, F", resultReplaceAll); 5. UsingreadAllLines(...
A quick introduction to the JavaScript string replace() and replaceAll() methods and how to use them to replace a text in a string.
This example demonstrate about How to use replace () in Android textview. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml....
2. Using replaceAll() methodUse replaceAll() method to replace space with underscore in java. It is identical to replace() method, but it takes regex as argument. You can go through difference between replace and replaceAll over here.Here is syntax of replaceAll method:...
There are several ways to remove line breaks from a file in Java. Here are two options: Read the file into a string and use a regular expression to replace line breaks with an empty string: import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java...
To remove all white spaces from a string in Java, you can use the replaceAll method of the String class, along with a regular expression that matches any white space character (including spaces, tabs, and line breaks): String str = " This is a test "; str = str.replaceAll("\\s", ...
replaceAll() accepts a regex as argument so it can be very powerful. To delete all non-digit in a String System.out.println( "@*1#^2$@!34#5ajs67>?<{8_(9SKJDH".replaceAll("\\D", "")); // output : 123456789 If your project already depends on Apache Commons thenStringUtilsprovid...