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2021 Mar 1z0-808 latest exam
Q101. Given the code fragment:
What is the result?
A. 28false29 true
B. 285 < 429 true
C. true true
D. compilation fails
Answer: C
Q102. Which two are benefits of polymorphism?
A. Faster code at runtime
B. More efficient code at runtime
C. More dynamic code at runtime
D. More flexible and reusable code
E. Code that is protected from extension by other classes
Answer: C,D
Q103. boolean log3 = ( 5.0 != 6.0) && ( 4 != 5);
boolean log4 = (4 != 4) || (4 == 4);
System.out.println("log3:"+ log3 + \nlog4" + log4);
What is the result?
A. log3:false log4:true
B. log3:true log4:true
C. log3:true log4:false
D. log3:false log4:false
Answer: B
Q104. 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: D
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
Q105. Given the code fragment:
Which option represents the state of the num array after successful completion of the outer loop?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Up to date 1z0-808 practice question:
Q106. Given:
What is the result?
A. The program prints nothing
B. d
C. A StringIndexOutOfBoundsException is thrown at runtime.
D. AnArrayIndexOutOfBoundsException is thrown at runtime.
E. A NullPointerException is thrown at runtime.
Answer: C
Q107. Given the code fragment:
What is the result?
A. [Robb, Rick, Bran]
B. [Robb, Rick]
C. [Robb, Bran, Rick, Bran]
D. An exception is thrown at runtime.
Answer: A
Q108. 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: C
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
Q109. Given:
public class Equal {
public static void main(String[] args) {
String str1 = "Java";
String[] str2 = {"J","a","v","a"};
String str3 = "";
for (String str : str2) {
str3 = str3+str;
}
boolean b1 = (str1 == str3);
boolean b2 = (str1.equals(str3));
System.out.print(b1+", "+b2);
}
What is the result?
A. true, false
B. false, true
C. true, true
D. false, false
Answer: B
Explanation: == strict equality. equals compare state, not identity.
Q110. Given:
What is the result?
A. 10 20 30 40
B. 0 0 30 40
C. Compilation fails
D. An exception is thrown at runtime
Answer: A