The Secret of 1z0 808 practice test

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Q81. Given the code fragment

Which code fragments, inserted independently, enable the code compile? 

A. t.fvar = 200; 

B. cvar = 400; 

C. fvar = 200; cvar = 400; 

D. this.fvar = 200; this.cvar = 400; 

E. t.fvar = 200; Test2.cvar = 400; 

F. this.fvar = 200; Test2.cvar = 400; 

Answer:


Q82. Given: 

What is the result? 

A. 120 

B. 120D 

C. A NumberFormatException will be thrown. 

D. Compilation fails due to error at line 5. 

E. Compilation tails due to error at line 8. 

Answer:

Explanation: 

At line 5, we have created a wrapper object of double by passing 120D, which is convertible to a Double, so there won't be any exception there. But if you check carefully, you can see the variable number is declared inside try block, so the scope of the variable number is limited to that block, so trying to access it outside causes a compile time error. httpsy/docs.oracle.com/javase/tutorial/iava/nutsandbolts/variables.html 


Q83. Given: 

public class MainMethod { 

void main() { 

System.out.println("one"); 

static void main(String args) { 

System.out.println("two"); 

public static void main(String[] args) { 

System.out.println("three"); 

void mina(Object[] args) { 

System.out.println("four"); 

What is printed out when the program is excuted? 

A. one 

B. two 

C. three 

D. four 

Answer:


Q84. Given the code fragment: 

Which two modifications should you make so that the code compiles successfully? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

E. Option E 

Answer: A,C 

Explanation: 

Add throws clause in both printFileContent and main. 


Q85. Given: 

What is the result? 

A. Base DerivedA 

B. Base DerivedB 

C. DerivedB DerivedB 

D. DerivedB DerivedA 

E. A classcast Except ion is thrown at runtime. 

Answer:


Q86. Given: 

What is the result? 

A. true:true 

B. true:false 

C. false:true 

D. false:false 

Answer:


Q87. Given the class definitions: 

And the code fragment of the main() method, 

What is the result? 

A. Java Java Java 

B. Java Jeve va 

C. Java Jeve ve 

D. Compilation fails 

Answer:


Q88. Given: 

What would be the output, if it is executed as a program? 

A. name =, pass = 

B. name = null, pass = null 

C. name = null, pass = false 

D. name = null pass = true E. Compile error. 

Answer:

Explanation: 

Both name and pass variables are instance variables, and we haven't given them any 

values, so they take their default values. For Boolean default value is false and for string 

which is not a primitive type default is null So at line 7, null will printed as the value of the 

variable name, and at line 8 false will be printed. Hence Option C is correct. 

As explained above options A, B and D are incorrect. 

Code compiles fine so option E is incorrect. 

Reference: 

https://docs.oracle.com/javaseAutorial/java/javaOOAariables.html 


Q89. Given: 

What is the result? 

A. Initialized Started 

B. Initialized Started Initialized 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:


Q90. Given the code fragment: 

Which code fragment, when inserted at line n1, enables the App class to print Equal? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: