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Frequently Asked Java interview questions and answers for freshers

(#M40029438) JAVA QUESTION java Keep an EYE

Q. Explain different way of using thread?

A. A Java thread could be implemented by using Runnable interface or by extending the Thread class. The Runnable is more advantageous, when you are going for multiple inheritance.

Asked In Java MAN (5 years ago)

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(#M40018946) JAVA QUESTION Advanced JAVA questions Keep an EYE

void start() {
A a = new A();
B b = new B();
a.s(b);
b = null; /* Line 5 */
a = null; /* Line 6 */
System.out.println("start completed"); /* Line 7 */
}

When is the B object, created in line 3, eligible for garbage collection?

A. after line 5
B. after line 6
C. after line 7
D. There is no way to be absolutely certain.

Asked In Java (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 (5 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 (5 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 (5 years ago)

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(#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 (3 years ago)

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(#M40018811) JAVA QUESTION JAVA QUESTIONS Keep an EYE

Can you load the server object
dynamically? If so what are the 3 major steps involved
in it?

Asked In Java (6 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 (6 years ago)

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(#M40156335) JAVA QUESTION Any Keep an EYE

whether java is purely object oriented ?

Asked In Java Balaji S (3 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 (17 Days ago)

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