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Question


What will be the output of the program?


class Equals
{
public static void main(String [] args)
{
int x = 100;
double y = 100.1;
boolean b = (x = y); /* Line 7 */
System.out.println(b);
}
}
Options:
A .  true
B .  false
C .  Compilation fails
D .  An exception is thrown at runtime
Answer: Option C

The code will not compile because in line 7, the line will work only if we use (x==y) 

in the line. The == operator compares values to produce a boolean, whereas the = 

operator assigns a value to variables.

Option A, B, and D are incorrect because the code does not get as far as compiling. 

If we corrected this code, the output would be false.


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