Question

Java.

Give some examples (3 or more) of uses of string variables and how you can relate to them in your coding projects

Answer 1

In java, string objects are immutable. Immutable simply means unmodifiable or unchangeable.

Once string object is created its data or state can't be changed but a new string object is created.

public class StringExamples {

  

   public static void main(String[] args) {

      

       // creating empty string

       String str1 = ""; // this string will be created in String Constant Pool

      

       String str2 = new String(); // creating empty string

                                   // this will be created in heap

      

       String st3 = "Alex";

      

       System.out.println(str2);

      

       String str4 = st3.substring(0, 2); // this will not change the original string content

                       // this will create new string, because strings are mutable

      

       System.out.println(str2);

       System.out.println(str4);

   }

}

Please let me knwo in case of any issue