java tutorial - Java - Strings and methods of the String class - java programming - learn java - java basics - java for beginners

Strings - represent a sequence of characters. The strings in Java are widely used and are objects.

The easiest way to create a string is:

String greeting = "Welcome to Wikitechy Tutorials!";

public class Test {

   public static void main(String args[]){
      char[] helloArray = { 'a', 'n', 'd', 'r', 'е', 'w', 's'};
      String helloString = new String(helloArray);  
      System.out.println(helloString);
   }
}

Output :

andrеws

public class Test {

   public static void main(String args[]) {
      String s = "Hi.Welcome to wikitechy!!!!";
      int len = s.length();
      
      System.out.println("Line length:" + len + "character.");
   }
}

Output :

Line length:27character.

The row class includes a method for combining two strings:

string1.concat(string2);

"My name is" .concat("Wikitechy");

"Hi," + "Welcome to wikitechy" + "!"

That leads to:

Hi,Welcome to wikitechy!

Let's look at the following Example.

public class Test {

   public static void main(String args[]) {
      String string1 = "Wikitechy";
      System.out.println("Welcome to "+ string1 +" Website!");
   }
}

Output :

Welcome to Wikitechy Website! 

System.out.printf("Value of variable float = " +
                   "%f, while the value of integer " +
                   "variable = %d, and string " +
                   "= %s", floatVar, intVar, stringVar);

You can also write:

String fs;
fs = String.format ("The value of the variable float =" +
                   "% f, as long as integer" +
                   "variable =% d, and string" +
                   "=% s", floatVar, intVar, stringVar);
System.out.println (fs);