Please help with solutions for these two questions. Thank you

Question 5

a) Write a program that will read a file named Score.txt. This file contains student ID and the scores of the student. Two lines of the file are shown below:

1234 67.5

1235 89.0

Print out the total number of students and the average score. Find the number of

students who obtain scores above the average score. [10]

b) Explore the role JDBC drivers. [4]

c) Explain the characteristics of a user defined exception in Java. [5]

d) With the aid of a code snippet, write down the ways by which Java can create multiple

threads. [6]

Question 6

a) Determine the output of the following code snippets.

i) byte x =64,y;

y = (byte) (x << 2);

System.out.println(y); [3]

ii) byte b;

double d = 417.35;

b = (byte) d;

System.out.println(b); [3]

iii) public static int mystery(int[] A) {

int x = 0;

for (int i = 0; i < A.length; i++)

if (A[i] % 2 == 1)

x++;

return x;

} [4]

iv) int m = 100;

while(true){

if(m < 10)

break;

m = m - 10;

}

System.out.println("m is " +m); [3]

b) Explain four different types of streams. [12]