What will be the output of this code?
int x = 2;
int y = 10;
x = y + 1;
y = x - 1;
x = x + 1;
y = y - 1;
x = x - y;
System.out.print(x); correct answers 3
What will be the output of this code?
int x = 13;
int y = 3;
int a = y;
y = x;
x = a;
System.out.print(x); correct answers 3
Given the following int (integer) variables -
a = 11
b = 37
c=3
, d=5
Evaluate the expression:
a + b % c * d correct answers 3
What characters cannot be used in java identifiers? correct answers - A valid identifier must have
characters [A-Z] or [a-z] or numbers [0-9], and underscore(_) or a dollar sign ($). for example,
@javatpoint is not a valid identifier because it contains a special character which is @.
- There should not be any space in an identifier. For example, java tpoint is an invalid identifier.
- An identifier should not contain a number at the starting. For example, 123javatpoint is an
invalid identifier.
- An identifier should be of length 4-15 letters only. However, there is no limit on its length. But,
it is good to follow the standard conventions.
- We can't use the Java reserved keywords as an identifier such as int, float, double, char, etc. For
example, int double is an invalid identifier in Java.
- An identifier should not be any query language keywords such as SELECT, FROM, COUNT,
DELETE, etc.
What are the Java primitive data types? correct answers Byte
Short
Int
Long
Float
Double