Question

Note: The answers to the following questions should be typed in the block of comments in the Assignemnt2.java file. Please make sure they're commented out (green). Type them neatly and make them easy to read for the graders.

Given the String object called myString with the value "Practice makes perfect!" answer the following questions.

Question #1 (1pt): Write a statement that will output (System.out) the number of characters in the string.
Question #2 (1pt): Write a statement that output the index of the character ‘m’.
Question #3 (1 pt): Write a statement that outputs the sentence in uppercase letters

Question #4 (1 pt): Write a statement that uses the original string to extract the new string "perfect" and prints it to the screen
Question # 5 (2 pts): What do the following expressions evaluate to in Java given int x = 3, y = 6;

a) x==y/2
b) x%2==0||y%2!=0 c) x–y<0&&!(x>=y) d) x+6!=y||x/y<=0

Question # 6 (1 pt): What does the following statement sequence print? (page 63)

String str = “Harry”;
int n = str.length();
String mystery = str.substring(0,1) + str.substring(n-1, n);
System.out.println(mystery);

Answer 1

1) & 2) & 3) & 4) & 5)

// Screenshot of the code & output

// code to copy

Assignemnt2.java

public class Assignemnt2 {

   public static void main(String[] args) {
   String myString = "Practice makes perfect!";
     
//Q1 - the number of characters in the string
System.out.println(myString.length( ));

// Q2 - the index of the character 'm'
System.out.println(myString.indexOf('m'));

// Q3 - the sentence in uppercase letters
System.out.println(myString.toUpperCase());
  
// Q4 - extract the new string "perfect"
System.out.println(myString.subSequence(0,8));

   }

}

5)

// Screenshot of the code & output

// code to copy

Main.java

public class Assignemnt2 {

   public static void main(String[] args) {
       int x = 3, y = 6;
      
       // a statement
       System.out.println(x==y/2);
      
       // b statement
       System.out.println(x%2==0||y%2!=0);
         
       // c statement
       System.out.println(x-y<0&&!(x>=y));
         
   // d statement
       System.out.println(x+6!=y||x/y<=0);

   }

}

6)

// Screenshot of the code & output

// code to copy

Main.java

public class Assignemnt2 {

   public static void main(String[] args)
   {      
       String str = "Harry";
       int n = str.length();
       String mystery = str.substring(0,1) + str.substring(n-1, n);
       System.out.println(mystery);
   }

}