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2017 Mar 1z0-808 test

Q21. Given: 

How many objects have been created when the line / / do complex stuff is reached? 

A. Two 

B. Three 

C. Four 

D. Six 

Answer:


Q22. Given: 

What is the output? 

A. 1Z0 

B. 1Z0-808 

C. An exception will be thrown. 

D. Compilation fails due to error at line 3. 

E. Compilation tails due to error at line 4. 

Answer:

Explanation: 

Option E is the correct answer. Code fails to compile because there is no method called concert in StringBuilder class. The concert method is in String class. Hence option E is correct Here we should have used append method of StringBuilder class, in that case option B would be correct. https://docs.oracle.com/javase/tutorial/java/data/buffers.html 


Q23. Given the code fragment: 

What is the result? 

A. Sum is 600 

B. Compilation fails at line n1. 

C. Compilation fails at line n2. 

D. A ClassCastException is thrown at line n1. 

E. A ClassCastException is thrown at line n2. 

Answer:


Q24. Given: 

public class Natural { 

private int i; 

void disp() { 

while (i <= 5) { 

for (int i=1; i <=5;) { 

System.out.print(i + " "); 

i++; 

i++; 

public static void main(String[] args) { 

new Natural().disp(); 

What is the result? 

A. Prints 1 2 3 4 5 once 

B. Prints 1 3 5 once 

C. Prints 1 2 3 4 5 five times 

D. Prints 1 2 3 4 5 six times 

E. Compilation fails 

Answer:

Explanation: 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 


Q25. Given: 

What is the result? 

A. 3 4 5 6 

B. 3 4 3 6 

C. 5 4 5 6 

D. 3 6 4 6 

Answer:


Improved 1z0-808 rapidshare:

Q26. Given the fragment: 

String[][] arra = new String[3][]; 

arra[0] = new String[]{"rose", "lily"}; 

arra[1] = new String[]{"apple", "berry","cherry","grapes"}; 

arra[0] = new String[]{"beans", "carrot","potato"}; 

// insert code fragment here 

Which code fragment when inserted at line '// insert code fragment here', enables the code to successfully change arra elements to uppercase? 

A. String[][] arra = new String[3][]; 

arra[0] = new String[]{"rose", "lily"}; 

arra[1] = new String[]{"apple", "berry","cherry","grapes"}; 

arra[0] = new String[]{"beans", "carrot","potato"}; 

for (int i = 0; i < arra.length; i++) { 

for (int j=0; j < arra[i].length; j++) { 

arra[i][j] = arra[i][j].toUpperCase(); 

B. for (int i = 0; i < 3; i++) { 

for (int j=0; j < 4; j++) { 

arra[i][j] = arra[i][j].toUpperCase(); 

C. for (String a[]:arra[][]) { 

for (String x:a[]) { 

D. toUpperCase(); 

E. for (int i:arra.length) { 

for (String x:arra) { 

arra[i].toUpperCase(); 

Answer:

Explanation: 

Incorrect: 

not A: arra.length is 3, but the subarrays have 2, 3 and 4 elements. Index will be out of 

bound. 

not B: The subarrys are of different lengths. Index will be out of bound. 

not D: Compile error. 


Q27. Given the code fragment: 

What is the result if the integer aVar is 9? 

A. 10 Hello World! 

B. Hello Universe! 

C. Hello World! 

D. Compilation fails. 

Answer:


Q28. Given: 

How many MarkList instances are created in memory at runtime? 

A. 1 

B. 2 

C. 3 

D. 4 

Answer:


Q29. Which two items can legally be contained within a java class declaration? 

A. An import statement 

B. A field declaration 

C. A package declaration 

D. A method declaration 

Answer: B,D 

Reference: 

http://docs.oracle.com/javase/tutorial/java/javaOO/methods.html 


Q30. int i, j=0; 

i = (3* 2 +4 +5 ) ; 

j = (3 * ((2+4) + 5)); 

System.out.println("i:"+ i + "\nj":+j); 

What is the result? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: