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1z0-808 Exam Questions - Online Test


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Q1. Given: 

What is the result? 

A. Area is 6.0 

B. Area is 3.0 

C. Compilation fails at line n1 

D. Compilation fails at line n2. 

Answer:

Q2. Given the code fragment: 

What is the result? 

A. Match 1 

B. Match 2 

C. No Match 

D. A NullPointerException is thrown at runtime. 

Answer:

Explanation: 

it will compare the string contents of the StringBuilder with string object. 

Q3. Given the code fragment: 

Which three lines fail to compile? 

A. Line 7 

B. Line 8 

C. Line 9 

D. Line 10 

E. Line 11 

F. Line 12 

Answer: A,D,F 

Q4. Given the code fragment? 

public class Test { 

public static void main(String[] args) { 

Test t = new Test(); 

int[] arr = new int[10]; 

arr = t.subArray(arr,0,2); 

// insert code here 

Which method can be inserted at line // insert code here to enable the code to compile? 

A. public int[] subArray(int[] src, int start, int end) { 

return src; 

B. public int subArray(int src, int start, int end) { 

return src; 

C. public int[] subArray(int src, int start, int end) { 

return src; 

D. public int subArray(int[] src, int start, int end) { 

return src; 

Answer:

Q5. Given: 

What is the result? 

A. true:true 

B. true:false 

C. false:true 

D. false:false 

Answer:

Q6. Given the code fragment: 

What is the result? 

A. Element 0 Element 1 

B. Null element 0 Null element 1 

C. Null Null 

D. A NullPointerException is thrown at runtime. 

Answer:

Q7. Given: 

public class TestLoop { 

public static void main(String[] args) { 

int array[] = {0, 1, 2, 3, 4}; 

int key = 3; 

for (int pos = 0; pos < array.length; ++pos) { 

if (array[pos] == key) { 

break; 

System.out.print("Found " + key + "at " + pos); 

What is the result? 

A. Found 3 at 2 

B. Found 3 at 3 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:

Explanation: The following line does not compile: System.out.print("Found " + key + "at " + pos); 

The variable pos is undefined at this line, as its scope is only valid in the for loop. Any variables created inside of a loop are LOCAL TO THE LOOP. 

Q8. Given the code fragment: 

What is the result? 

A. 100 

B. 101 

C. 102 

D. 103 

E. Compilation fails 

Answer:

Q9. Given the code fragment: 

What is the result? 

A. 10 : 10 

B. 5 : 5 

C. 5 : 10 

D. Compilation fails 

Answer:

Q10. Given the code fragment: 

for (int ii = 0; ii < 3;ii++) { 

int count = 0; 

for (int jj = 3; jj > 0; jj--) { 

if (ii == jj) { 

++count; 

break; 

System.out.print(count); continue; } 

What is the result? 

A. 011 

B. 012 

C. 123 

D. 000 

Answer: