Mock java Questions set - 16

Sun Certified Java Programmer(SCJP 1.4)

Mock Exam - Nested Classes
Q1
public class Test1{
private static int i = 10;
static class Inner extends Test1{
int i;
public void method(){
System.out.println(i);
}
}
public static void main(String args[]){
new Test10.Inner().method();
}
}
which of the following statement in //? will print "Inner class"?
A1 10
A2 0
A3 nothing is printed.
A4 Compiler error.
Q2 which of the following modifiers are applied to the nested classes class?
A1 private
A2 protected
A3 public
A4 static
A5 All the above.
Q3 which of the following modifiers are applied to the top level classes ?
A1 static
A2 private
A3 strictfp
A4 abstract
A5 All the above.
Q4 which modifer is uesd to stop overridding a method?
A1 final
A2 static
A3 abstract
A4 None of the above.
Q5
public abstract final class Test5{
public static void main(String args[]){
System.out.println("Modifiers");
}
}
what will be the output?
A1 Modifiers
A2 Compiler error
A3 exception thrown at runtime
A4 None of the above
Q6 which of the following are valid syntax for a toplevel class?
A1 public static class Test6{}
A2 public abstrct class Test6{}
A3 private final class Test6{}
A4 public final class Test6{}
Q7 which of the following are valid syntax for nested classes?
A1 private final abstract class Test7{}
A2 private final class Test7{}
A3 private static class Test7{}
A4 protected abstract class Test7{}
Q8
public class Test8{
class Inner{
public void method(){
System.out.println("Inner class");
}
}
public static void main(String args[]){
// ?
}
}
which of the following statement in //? will print "Inner class"?
A1 new Test8.Inner().method();
A2 new Test8().Inner().method();
A3 new Test8.Inner.method();
A4 Compiler error.
Q9
public class Test9{
static class Inner{
public void method(){
System.out.println("Inner class");
}
}
public static void main(String args[]){
// ?
}
}
which of the following statement in //? will print "Inner class"?
A1 new Test9.Inner().method();
A2 new Test9().Inner().method();
A3 new Test9.Inner.method();
A4 Compiler error.
Q10 which of the following modifiers are applied to local classes(classses inside method)?.
A1 private
A2 public
A3 protected
A4 None of the above.
Answers
1 new Test8.Inner().method();.
2 All the above.
3
strictfp
abstract
4 final
5 Compiler error
6
public abstrct class Test6{}
public final class Test6{}
7
private final class Test7{}
private static class Test7{}
protected abstract class Test7{}
8 Compiler error.
9 new Test8.Inner().method();.
10 None of the above
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