Question

Test Your Understanding

Create a JAVA package by name ClassEx2 and in the main() method of
the class, assign your name to a String object and your father name to a
different String object and do the following;

Concatenate your name and your father name.

Get the length of your full name.

Find the index of any character in your full name.

Replace the occurrence of any lower case character in your full
name to capital character.

Compare your first name with your father name , display message
indicating which name is first lexicographically.

Answer 1

Complete code in java:-

class ClassEx2 {
   public static void main(String ... args) {
       // Creating string object of my name.
       String name = new String("Alice");
       System.out.println("My name: "+name);

       // Creating string object of my father's name.
       String fatherName = new String("John");
       System.out.println("My father's name: "+fatherName);

       // Concatenating both names.
       String fullName = name+fatherName;
       System.out.println("Full name after concatenation: "+fullName);

       // Measuring length of concatenated name.
       int len = fullName.length();
       System.out.println("Length of full name: "+len);

       // Getting index of 'e' in full name.
       int indexOfE = fullName.indexOf("e");
       System.out.println("Index of character 'e' in full name: "+indexOfE);

       // Replacing 'i' with 'I' in full name.
       fullName = fullName.replace('i', 'I');
       System.out.println("Full name after replacement of 'i' with 'I': "+fullName);

       // Comparing both names.
       int comp = name.compareTo(fatherName);
       if(comp == 0) {
           System.out.println("Both names are equal lexicographically");
       }
       else if(comp > 0) {
           System.out.println("My name is greater than my father's name laxicographically");
       }
       else {
           System.out.println("My father's name is greater than my name laxicographically");
       }
   }
}

Screenshot of output:-