SCJP 1.4 Mock Exam

Mock Exam – 3

Q1	public class Test1{ public static void main(String args[]){ System.out.println(method()); } public static int method(){ try{ return 1; } catch(Exception e){ return 2; } finally{ return 3; } } } What will be the output?
A1	1
A2	2
A3	3
A4	0
Q2	public class Test2{ public static void main(String args[]){ System.out.println(method()); } public static int method(){ try{ throw new Exception(); return 1; } catch(Exception e){ return 2; } finally{ return 3; } } }What will be the output? 1
A1	2
A2	3
A3	4
A4	Compiler error
Q3	public class Test3{ public static void main(String args[]){ System.out.println(method()); } public static int method(){ try{ throw new Exception(); } catch(Exception e){ throw new Exception(); } finally{ return 3; } } } What will be the output?
A1	3
A2	0
A3	Runtime Exception
A4	Compiler error
Q4	public class Test4{ public static void main(String args[]){ System.out.println(method()); } public static int method(){ return; } } What will be the output?
A1	null
A2	0
A3	Runtime exception
A4	Compiler error
Q5	import java.io.IOException; public class Test5{ public static void main(String args[]){ try{ throw new IOException(); } catch(Exception e){ System.out.println(“Excepion”); } catch(IOException e){ System.out.println(“IOExcepion”); } } } What will be the output?
A1	Exception
A2	IOException
A3	Exception IOException
A4	Compilers error
Q6	public class Test6{ public static void main(String args[]) throws Exception{ try{ throw new Exception(); } finally{ System.out.println(“No Error”); } } } What will be the output?
A1	No Error followed by java.lang.Exception
A2	java.lang.Exception followed by No Error
A3	No Error
A4	Compiler Error
Q7	ublic class Test7{ public static void main(String args[]) throws Exception{ Test7 t = new Test7(); t.method(); System.out.println(“Print”); } public void method()throws Exception{ throw new Exception(); } } What will be the output?
A1	Print
A2	Exception thrown at runtime
A3	no output
A4	Compiler Error
Q8	public class Test8{ public static void main(String args[]) throws Exception{ Test8 t = new Test8(); t.method(); System.out.println(“Print”); } public void method(){ try{ throw new Exception(); }catch(Exception e){} } } What will be the output?
A1	Print
A2	Exception thrown at runtime
A3	no output
A4	Compiler Error
Q9	public class Test9 extends A{ public static void main(String args[]) throws Exception{ Test9 t = new Test9(); } } class A{ A() throws Exception{ System.out.println(“A Class”); } } What will be the output?
A1	A Class
A2	Runtimxception
A3	no output
A4	Compiler Error
Q10	public class Test10 extends A{ Test10()throws Exception{ System.out.println(“Test10 Class”); } public static void main(String args[]) throws Exception{ Test10 t = new Test10(); } } class A{ A() throws Exception{ System.out.println(“A Class”); } } What will be the output?
A1	A Class Test10 Class
A2	Runtimxception
A3	no output
A4	Compiler Error
Q11	public class Test11 extends A{ Test11()throws Exception{ System.out.println(“Test10 Class”); } Test11(int i){} public static void main(String args[]) throws Exception{ Test11 t = new Test11(); } } class A{ A() throws Exception{ System.out.println(“A Class”); } } What will be the output?
A1	A Class Test10 Class
A2	Runtimxception
A3	no output
A4	Compiler Error
Q12	import java.io.IOException; public class Test12 extends A{ public void method() throws Exception{ System.out.println(“Subclass”); } public static void main(String args[]) throws Exception{ A a = new A(); a.method(); a = new Test12(); a.method(); } } class A{ public void method() throws IOException{ System.out.println(“Superclass”); } } What will be the output?
A1	Subclass Superclass
A2	Runtimxception
A3	Superclass Superclass
A4	Compiler Error
Q13	What are the legal arguments types for switch?
A1	int
A2	byte
A3	char
A4	All the above.
Q14	Which of the following are valif if constructs?
A1	if(2>3){}
A2	if(false){}
A3	if(false){}
A4	if(true)
Q15	public class Test15{ public static void main(String args[]) throws Exception{ for (int i = 0;i < 3;i++){ for (int j = 0;j < 3;j++){ System.out.print(i); System.out.print(j+”,”); break; } } } } What will be the output?
A1	00,
A2	00,10,20,
A3	000102
A4	None of the above
Q16	public class Test16 extends A{ Test16(){ System.out.println(“Sub”); } public static void main(String args[]) { Test16 t = new test16(); } } class A{ A(int i){ System.out.println(“Super”); } } What will be the output?
A1	Super Sub
A2	Super
A3	Sub
A4	Compiler Error
Q17	public class Test17 extends A{ Test17(int i){ System.out.println(i); super(2); } public static void main(String args[]) { Test17 t = new Test17(5); } } class A{ A(int i){ System.out.println(i); } } What will be the output?
A1	5 2
A2	2 5
A3	5 5
A4	Compiler error
Q18	public class Test18 { Test18(){ this(7); } Test18(int i){ this(1.0); Test18(i); } Test18(float f){ System.out.println(f * 2); } Test18(double d){ System.out.println(d * 3); } void Test18(int i){ System.out.println(i); } public static void main(String args[]) { Test18 t = new Test18(); } } What will be the output?
A1	3.0 7
A2	2.0 7
A3	7 3.0
A4	Compiler Error
Q19	public class Test19 { float f; Test19(){ this(f); f = 3; } Test19(float f){ System.out.println(f); } public static void main(String args[]) { Test19 t = new Test19(); } } What will be the output?
A1	0.0
A2	0
A3	3
A4	Compiler error
Q20	public class Test20 extends A{ Test20(){ this(“Hi”); } Test20(String str){ System.out.println(str); } public static void main(String args[]) { Test20 t = new Test20(); } } class A{ A(){ System.out.println(“Super”); } } What will be the output?
A1	Super Hi
A2	Hi Super
A3	Super
A4	Compiler Error
Q21	public class Test21{ public static void main(String args[]) { Test21 t; t.method(); } public static void method(){ System.out.println(“NullPointerException”); } } What will be the output?
A1	Nothing is printed.
A2	RuntimeException
A3	NullPointerException
A4	Compiler Error
Q22	public class Test22{ public static void main(String args[]) { Test22 t = null; t.method(); } public static void method(){ System.out.println(“NullPointerException”); } } What will be the output?
A1	Nothing is printed.
A2	RuntimeException
A3	NullPointerException
A4	Compiler Error
Q23	Which of the following modifiers are allowed in constructor?
A1	private
A2	default
A3	public
A4	static
Q24	Which of the following modifiers are allowed for top-level classes?
A1	private
A2	static
A3	public
A4	strictfp
Q25	which one of the keyword cannot be used with instance variables?
A1	transient
A2	volatile
A3	synchronized
A4	abstract
Answers
1	3
2	Compiler Error
3	Compiler Error
4	Compiler Error
5	Compiler Error
6	No Error followed by java.lang.Exception
7	Exception thrown at runtime
8	Print
9	Compiler Error
10	A Class Test10 Class
11	Compiler Error
12	Compiler Error
13	All the above
14	if(2>3){}if(false){} if(true){}
15	00,10,20,
16	Compiler Error
17	Compiler Error
18	3.0 7
19	Compiler Error
20	Super Hi
21	Compiler Error
22	NullPointerException
23	private public
24	strictfp public
25	synchronized abstrct