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Java interview questions and answers for freshers Page 7

(#M40031854) JAVA QUESTION Keep an EYE

What is the output of this program?

class conversion {
public static void main(String args[])
{
double a = 295.04;
int b = 300;
byte c = (byte) a;
byte d = (byte) b;
System.out.println(c + " " + d);
}
}
a) 38 43
b) 39 44
c) 295 300
d) 295.04 300

Asked In Java Rajendra Singh (11 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 (11 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 (11 years ago)

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(#M40031270) JAVA QUESTION java Keep an EYE

Q. Can we execute a java program without main() method ?

Asked In Java muralikrishna guntuku (11 years ago)

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(#M40031255) JAVA QUESTION JAVA Keep an EYE

Write a program to print all the employee details that already exist in our system or directory. Suppose if we had a employee name with "abc". IF we click on "abc" we should get all the details of that employee..ie., already the details are there in our folder

Asked In Java jeswanth kumar reddy (11 years ago)

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(#M40029442) JAVA QUESTION java Keep an EYE

Q. What is UNICODE?

A. Unicode is used for internal representation of characters and strings and it uses 16 bits to represent each other.

Asked In Java MAN (12 years ago)

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(#M40029441) JAVA QUESTION java Keep an EYE

Q. What are the different ways to handle exceptions?

A. There are two ways to handle exceptions,
1. By wrapping the desired code in a try block followed by a catch block to catch the exceptions. and
2. List the desired exceptions in the throws clause of the method and let the caller of the method
handle those exceptions

Asked In Java MAN (12 years ago)

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(#M40029440) JAVA QUESTION java Keep an EYE

What kind of thread is the Garbage collector thread? It is a daemon thread

Asked In Java MAN (12 years ago)

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(#M40029439) JAVA QUESTION java Keep an EYE

Q. What are the two major components of JDBC?

A. One implementation interface for database manufacturers, the other implementation interface for application and applet writers.

Asked In Java MAN (12 years ago)

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(#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 (12 years ago)

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