Q1. Given: 

public class ScopeTest { 

int j, int k; 

public static void main(String[] args) { 

ew ScopeTest().doStuff(); } 

void doStuff() { 

nt x = 5; 

oStuff2(); 

System.out.println("x"); 

} 

void doStuff2() { 

nt y = 7; 

ystem.out.println("y"); 

or (int z = 0; z < 5; z++) { 

ystem.out.println("z"); 

ystem.out.println("y"); 

} 

which two items are fields? 

A. j 

B. k 

C. x 

D. y 

E. z 

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Q2. Which code fragment, when inserted at line 9, enables the code to print true? 

A. String str2 = str1; 

B. String str2 = new string (str1); 

C. String str2 = sb1.toString(); 

D. String str2 = “Duke”; 

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Q3. Which three are advantages of the Java exception mechanism? 

A. Improves the program structure because the error handling code is separated from the 

normal program function 

B. Provides a set of standard exceptions that covers all the possible errors 

C. Improves the program structure because the programmer can choose where to handle 

exceptions 

D. Improves the program structure because exceptions must be handled in the method in 

which they occurred 

E. allows the creation of new exceptions that are tailored to the particular program being 

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Q4. View the exhibit: 

public class Student { 

public String name = ""; 

public int age = 0; 

public String major = "Undeclared"; 

public boolean fulltime = true; 

public void display() { 

System.out.println("Name: " + name + " Major: " + major); } 

public boolean isFullTime() { 

return fulltime; 

} 

} 

Which line of code initializes a student instance? 

A. Student student1; 

B. Student student1 = Student.new(); 

C. Student student1 = new Student(); 

D. Student student1 = Student(); 

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Q5. View the Exhibit. 

public class Hat { 

public int ID =0; 

public String name = "hat"; 

public String size = "One Size Fit All"; 

public String color=""; 

public String getName() { return name; } 

public void setName(String name) { 

this.name = name; 

} 

} 

Given 

public class TestHat { 

public static void main(String[] args) { 

Hat blackCowboyHat = new Hat(); 

} 

} 

Which statement sets the name of the Hat instance? 

A. blackCowboyHat.setName = "Cowboy Hat"; 

B. setName("Cowboy Hat"); 

C. Hat.setName("Cowboy Hat"); 

D. blackCowboyHat.setName("Cowboy Hat"); 

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Q6. Which declaration initializes a boolean variable? 

A. boolean h = 1; 

B. boolean k = 0; 

C. boolean m = null; 

D. boolean j = (1 < 5); 

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Q7. Which two are valid declarations of a two-dimensional array? 

A. int [] [] array2D; 

B. int [2] [2] array2D; 

C. int array2D []; 

D. int [] array2D []; 

E. int [] [] array2D []; 

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Q8. Given: 

What is the result? 

A. null 

B. compilation fails 

C. Java.lang.NullPointerException 

D. 0 

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Q9. Given the code fragment: 

A. Super Sub Sub 

B. Contract Contract Super 

C. Compilation fails at line n1 

D. Compilation fails at line n2 

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Q10. Why will the code not compile? 

A. A static field cannot be private. 

B. The getLetter method has no body. 

C. There is no setLetter method. 

D. The letter field is uninitialized. 

E. It contains a method named Main instead of ma 

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