Java Examples Java Videos Java Compiler Java Exercises Java Quiz Java Code Challenges Java Practice Problems Java Server Java Syllabus Java Study Plan Java Interview Q&A ... The + operator can be used between strings to combine them.

Java Examples Java Videos Java ... System.out.println(firstName.concat(lastName)); ... The concat() method appends (concatenate) a string to the end of another string....

public class JavaConcat { public static void main(String[] args){ String a = "w3schools"; String b = ".in"; String c = a.concat(b); System.out.println(c); } } Program Output: Explanation: Here is a Java program which illustrates how you can concatenate two strings in Java. The meaning of concatenation is that two words can be joined as a single word. In other words, this pre defined method is used to append one string to the end of other string (Here string a with string b).

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For a complete reference of String methods, go to our Java String Methods Reference. The reference contains descriptions and examples of all string methods. ... If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail: sales@w3schools.com

August 22, 2022 - If argument is a String, a CharSequence*, or a char[] array**, the characters within are appended to the end of the StringBuilder object (its capacity is increased by the number of characters appended).

July 11, 2025 - In Java, the append() method of StringBuilder class is used to add data to the end of an existing StringBuilder object.

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The concat() method returns a new string. ... let text1 = "Hello"; let text2 = "world!"; let text3 = "Have a nice day!"; let result = text1.concat(" ", text2, " ", text3); Try it Yourself » ... If you want to use W3Schools services as an ...

It allows us to modify strings without creating intermediate string objects. We can use the StringBuilder class to create the first string and then append it to another string using the append() method.

package com.tutorialspoint; import java.lang.*; public class StringBuilderDemo { public static void main(String[] args) { StringBuilder str = new StringBuilder("tutorials "); System.out.println("string = " + str); // appends the string argument to the StringBuilder str.append("point"); // print the StringBuilder after appending System.out.println("After append = " + str); str = new StringBuilder("1234 "); System.out.println("string = " + str); // appends the string argument to the StringBuilder str.append("!#$%"); // print the StringBuilder after appending System.out.println("After append = " + str); } }

September 29, 2025 - Almost there... just a few more seconds

Characters of the char array str, starting at index offset, are appended, in order, to the contents of this sequence. The length of this sequence increases by the value of len. The one that accepts a CharSequence (a String in your example) says

January 8, 2024 - The concat() method in the String class appends a specified string at the end of the current string, and returns the new combined string.

February 2, 2024 - This tutorial will demonstrate how we can append strings in java in the most efficient way.

September 28, 2023 - StringBuilder append(CharSequence cs, int start, int end) works almost as append(char[] cstr, int set, int length) we discussed above. However, this method specifies the first element of the subsequence and the last. It is important to remember that start is included in the subsequence, but end is not (that is, the last element in the subsequence is the element that comes before end). Why is that? It's just the way it is in Java.

May 8, 2025 - In this example, our chain is started with a String literal, the concat method then allows us to chain the calls to append further Strings. Next up is the String.format method, which allows us to inject a variety of Java Objects into a String template.