STIA1123 Exercise3

Question 1

Write TWO (2) different ways to create an object from the String class.

public class Main {

public static void main (String[] args{ 
  String obj1 = "1st way to create an object";
  String obj2 = new String("2nd way to create an object");
  }
}

Question 2

What is the output for the following Java statements?
String phr = new String("Big,blue sky");
System.out.println(phr.substring(phr.indexOf(","),7));

Output: ,blu

Question 3

Give your description on the output that will be produced by the execution of the following statements.
Random rd = new Random();
System.out.println(rd.nextInt(41) + 10);

The output will be the sum of random number from a range of 0-40 and 10.

Question 5

Determine the output of the following code segments:
String test = "abc";
test = test + test;
System.out.println(test);

Output: abcabc

Random random = new Random();
double d = Math.round ( 2.5 + random.nextInt(1) );
System.out.println("The value is ” + d);

Ouput: The value is 3.0