THEORY PRACTICE TEST PAPER1

1. What is a byte code?

2. State the differences between Syntax errors and Logical errors.

3. Write down the equivalent expression for the mathematical expression

q = 1 / √(a + b) + 3 / c²

4. Explain the methods print() and println()?

5. What do you mean by coercion?

6. What is the difference between these two function Math.ceil() and Math.rint(), explain with example.

7. Explain two types of jump statement in java.

8. Find the output: String s="Year 2019";

System.out.println(Character.isLetterOrDigit(s.charAt(5)));

System.out.println(Character.isWhitespace(s.charAt(4)));

System.out.println(Character.toLowerCase(s.charAt(3)));

9. Find the output: double x=12.35; int y=12;

String s1=String.valueOf(x);

String s2=Integer.toString(y);

System.out.println(s1+s2);

10. Find the output: int a = 0;

if(a>0 &&a<20)

a++;

else a--;

System.out.println(a);

11. Rewrite the following using switch-case.

char x;        int m=0;

if(x== ‘a’)

m=m+1;

if(x==’b’)

m=m+2;

12. State the output of:

for (int I = 1; i<=6; i++)

{

System.out.println(i+ “ “);

if(i%2==0)

continue;

System.out.println( i+ “ “);

}

13. Rewrite the following using for loop:

int i=1, f=1;

do{

f=f*I;

i++;

} while(i<=10);

System.out.println(f);

14. Rewrite using if-else:

comm = (sale> 15000)? Sale*  5/100:0;

15. Find the output:

char ch = 'y';

char chr = Character.toUpperCase(ch);

int p = (int) chr;

System.out.println(chr + "\t" + p);