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Vendor: Oracle
Exam Code: 1Z0-803
Exam Name: Java SE 7 Programmer I

QUESTION 16
A method doSomething () that has no exception handling code is modified to trail a method that throws a checked exception. Which two modifications, made independently, will allow the program to compile?

A.    Catch the exception in the method doSomething().
B.    Declare the exception to be thrown in the doSomething() method signature.
C.    Cast the exception to a RunTimeException in the doSomething() method.
D.    Catch the exception in the method that calls doSomething().

QUESTION 17
Given the code fragment:
String color = “Red”;
switch(color) {
case “Red”:
System.out.println(“Found Red”);
case “Blue”:
System.out.println(“Found Blue”);
break;
case “White”:
System.out.println(“Found White”);
break;
default:
System.out.println(“Found Default”);
}
What is the result?

A.    Found Red
B.    Found Red
Found Blue
C.    Found Red
Found Blue
Found White
D.    Found Red
Found Blue
Found White
Found Default

Answer: B

QUESTION 18
Which two may precede the word “class” in a class declaration?

A.    local
B.    public
C.    static
D.    volatile
E.    synchronized

Answer: BC

QUESTION 19
Which three are bad practices?

A.    Checking for ArrayindexoutofBoundsException when iterating through an array to determinewhen all elements have been visited
B.    Checking for Error and. If necessary, restartingthe program to ensure that users are unaware problems
C.    Checking for FileNotFoundException to inform a user that a filename entered is not valid
D.    Checking for ArrayIndexoutofBoundsExcepcion and ensuring that the program can recover if one occur
E.    Checking for an IOException and ensuring that the program can recover if one occurs

Answer: ABD

QUESTION 20
Given:
public class Bark {
// Insert code here – Line 5
public abstract void bark(); // Line 6
} // Line 7
// Line 8
// Insert code here – Line 9
public void bark() {
System.out.println(“woof”);
}
}
What code should be inserted?

A.    5.class Dog {
9. public class Poodle extends Dog {
B.    5.abstract Dog {
9. public class poodle extends Dog {
C.    5.abstractclassDog {
9. public class Poodle extends Dog {
D.    5.abstract Dog {
9.public class Poodle implements Dog {
E.    5. abstractDog {
9. public class Poodle implements Dog {
F.    5.abstract class Dog {
9.public class Poodle implements Dog {

Answer: C

QUESTION 21
Given:
class X {}
class Y {Y () {}}
class Z {z(int i ) {} }
Which class has a default constructor?

A.    X only
B.    Y only
C.    Z only
D.    X and Y
E.    Y and Z
F.    X and Z
G.    X, Y and Z

Answer: A

QUESTION 22
Given:
Public static void main (String [] args) {
int a, b, c = 0;
int a, b, c;
int g, int h, int i, = 0;
int d, e, F;
int k, l, m; = 0;
Which two declarations will compile?

A.    int a, b, c = 0;
B.    int a, b, c;
C.    int g, int h, int i = 0;
D.    int d, e, F;
E.    int k, l, m = 0;

Answer: AD

QUESTION 23
Given the code fragment:
int j=0, k =0;
for (int i=0; i < x; i++) {
do {
k=0;
while (k < z) {
k++;
System.out.print(k + ” “);
}
System.out.println(” “);
j++;
} while (j< y);
System.out.println(“—-“);
}
What values of x, y, z will produce the following result?
1 2 3 4
1 2 3 4
1 2 3 4
——
1 2 3 4
——

A.    X = 4, Y = 3, Z = 2
B.    X = 3, Y = 2, Z = 3
C.    X = 2, Y = 3, Z = 3
D.    X = 4, Y = 2, Z= 3
E.    X = 2, Y = 3, Z = 4

Answer: E

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QUESTION 24
Which statement initializes a stringBuilder to a capacity of 128?

A.    StringBuildersb = new String(“128”);
B.    StringBuildersb = StringBuilder.setCapacity(128);
C.    StringBuildersb = StringBuilder.getInstance(128);
D.    StringBuildersb = new StringBuilder(128);

Answer: D

QUESTION 25
Given:
public class DoCompare4 {
public static void main(String[] args) {
String[] table = {“aa”, “bb”, “cc”};
int ii =0;
do
while (ii < table.length)
System.out.println(ii++);
while (ii < table.length);
}
}
What is the result?

A.    0
B.    0
1
2
C.    0
1
2
0
1
2
0
1
2
D.    Compilation fails

Answer: B

QUESTION 26
A method is declared to take three arguments. A program calls this method and passes only two arguments. What is the result?

A.    Compilation fails.
B.    The third argument is given the value null.
C.    The third argument is given the value void.
D.    The third argument is given the value zero.
E.    The third argument is given the appropriate false value for its declared type.
F.    An exception occurs when the method attempts to access the third argument.

Answer: A

QUESTION 27
Given the fragment:
int [] array = {1, 2, 3, 4, 5};
System.arraycopy (array, 2, array, 1, 2);
System.out.print (array [1]);
System.out.print (array[4]);
What is the result?

A.    14
B.    15
C.    24
D.    25
E.    34
F.    35

Answer: F

QUESTION 28
Given the following code fragment:
if (value >= 0) {
if (value != 0)
System.out.print(“the “);
else
System.out.print(“quick “);
if (value < 10)
System.out.print(“brown “);
if (value > 30)
System.out.print(“fox “);
else if (value < 50)
System.out.print(“jumps “);
else if (value < 10)
System.out.print(“over “);
else
System.out.print(“the “);
if (value > 10)
System.out.print(“lazy “);
} else {
System.out.print(“dog “);
}
System.out.print(“… “);
}
What is the result if the integer value is 33?

A.    The fox jump lazy…
B.    The fox lazy…
C.    Quick fox over lazy …
D.    Quick fox the ….

Answer: B

QUESTION 29
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

Answer: ACE

QUESTION 30
Given the code fragment:
Boolean b1 = true;
Boolean b2 = false;
int 1 = 0;
while (foo) {}
Which one is valid as a replacement for foo?

A.    b1.compareTo(b2)
B.    i = 1
C.    i == 2? -1:0
D.    “foo”.equals(“bar”)

Answer: D

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