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Frequently Asked Java interview questions and answers for freshers

(#M40155917) JAVA QUESTION The Difference between == operator and equals() method? Keep an EYE

Which is the correct option for comparing the contents of 2 String objects?
[1] == operator
[2] equals() method
[3] Both

Asked In Java Rishikesh Agrawani (4 years ago)

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(#M40031853) JAVA QUESTION Keep an EYE

What is the output of this program?

class average {
public static void main(String args[])
{
double num[] = {5.5, 10.1, 11, 12.8, 56.9, 2.5};
double result;
result = 0;
for (int i = 0; i < 6; ++i)
result = result + num[i];
System.out.print(result/6);

}
}
a) 16.34
b) 16.566666644
c) 16.46666666666667
d) 16.46666666666666

Asked In Java Rajendra Singh (6 years ago)

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(#M40031852) JAVA QUESTION Keep an EYE

Which of the following are legal lines of Java code?
1. int w = (int)888.8;
2. byte x = (byte)100L;
3. long y = (byte)100;
4. byte z = (byte)100L;
a) 1 and 2
b) 2 and 3
c) 3 and 4
d) All statements are correct.

Asked In Java Rajendra Singh (6 years ago)

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(#M40018860) JAVA QUESTION JAVA QUESTIONS Keep an EYE

Which interface does java.util.Hashtable implement?
1) Java.util.Map
2) Java.util.List
3) Java.util.HashTable
4) Java.util.Collection

Asked In Java (7 years ago)

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(#M40031855) JAVA QUESTION Keep an EYE

What is the output of this program?

class area {
public static void main(String args[])
{
double r, pi, a;
r = 9.8;
p1 = 3.14;
a = pi * r * r;
System.out.println(a);
}
}
a) 301.5656
b) 301
c) 301.56
d) 301.56560000

Asked In Java Rajendra Singh (6 years ago)

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(#M40018859) JAVA QUESTION JAVA QUESTIONS Keep an EYE

public class While
{
public void loop()
{
int x= 0;
while ( 1 ) /* Line 6 */
{
System.out.print("x plus one is " + (x + 1)); /* Line 8 */
}
}
}


public class While
{
public void loop()
{
int x= 0;
while ( 1 ) /* Line 6 */
{
System.out.print("x plus one is " + (x + 1)); /* Line 8 */
}
}
}

Which statement is true?

A. There is a syntax error on line 1.
B. There are syntax errors on lines 1 and 6.
C. There are syntax errors on lines 1, 6, and 8.
D. There is a syntax error on line 6.

Asked In Java (7 years ago)

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(#M40166061) JAVA QUESTION efficient means of execution Keep an EYE

Which checks the object code to determine whether there are more efficient means of execution?
1)Interpreter
2) Linker
3)Compiler
4) Optimizer

Asked In Java Mehul KOTHARI (1 year ago)

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(#M40018965) JAVA QUESTION Advanced JAVA questions Keep an EYE

Which is true about a method-local inner class?

A. It must be marked final.
B. It can be marked abstract.
C. It can be marked public.
D. It can be marked static.

Asked In Java (7 years ago)

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(#M40018857) JAVA QUESTION JAVA QUESTIONS Keep an EYE

public void test(int x)
{
int odd = 1;
if(odd) /* Line 4 */
{
System.out.println("odd");
}
else
{
System.out.println("even");
}
}

Which statement is true?

A. Compilation fails.
B. "odd" will always be output.
C. "even" will always be output.
D. "odd" will be output for odd values of x, and "even" for even values.

Asked In Java (7 years ago)

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(#M40166286) JAVA QUESTION NEAREST PERFECT SQUARE Keep an EYE

Find the nearest perfect square of the given number.
Sample input:600
Sample output:576.

Sample input:47011
Sample output:47089

Asked In Java Arun (1 year ago)

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