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Frequently Asked Java interview questions and answers for freshers

(#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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(#M40018964) JAVA QUESTION Advanced JAVA questions Keep an EYE

What is RMI and what are the services
in RMI?

Asked In Java (5 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 (5 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 (2 Months ago)

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(#M40018802) JAVA QUESTION JAVA QUESTIONS Keep an EYE

What is the base class for all swing
components?

Asked In Java (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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(#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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(#M40165443) JAVA QUESTION Circles and distance Keep an EYE

Circles and Distances
Problem Description
Task is to calculate the straight line distance between the two objects moving in a circular path. They may move at different velocities. The distance has to be calculated after N seconds.

The figure and commentary below it, explains the problem in detail.

com.tcs.cv.automata.ei.middleware.DocxToHtmlConverter@491cde5b:image1.png

We have two point objects B and C at rest on a straight line at a distance r1 and r2 units from a point A. At time t=0 seconds, the objects start moving in a circular path with A at the center with velocity v1 and v2 degrees per second.

Given inputs v1, v2, r1 and r2, calculate the distance between the B and C after N seconds.

Distance should be printed up to an accuracy of 2 places after the decimal point. Use Rounding Half-up semantics.

Input Format
First line contains velocity of object B in degrees per second (v1)

Second line contains distance of object B from A (r1)

Third line contains velocity of object C in degrees per second (v2)

Fourth line contains distance of object C from A (r2)

Fifth line contains time in seconds after which the distance between B and C, is to be measured (N)

Output
The distance between B and C, N seconds after they are set in motion

Constraints

v1, v2, r1, r2 > 0 and all are integer values.

r2 > r1

0 < n <= 100

The objects move in anticlockwise direction

v1, v2 <=360

r2 <= 100


Explanation
Example 1

Input

90

5

270

10

1

Output

15.00

Explanation

After 1 second, the object at B would cover 90 degrees and the object at C would cover 270 degrees. Both the objects would be vertically opposite to each other and would lie in a straight line.

So the distance between them would be equal to the sum of their distance from the origin A=5+10= 15

Asked In Java joshika (8 Months ago)

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(#M40156025) JAVA QUESTION java Keep an EYE

how can we print a statement in java with out main method in the java 7 version

Asked In Java PRABHANJAN (3 years ago)

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(#M40155163) JAVA QUESTION General awareness Question On Class and objects Related? Keep an EYE

Have You Seen A "Tree"??
a)Yes b)No
The above question is related to class and Object....If you say Yes/No....please Submit your reason also

Asked In Java Ravi teja (3 years ago)

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