Variables-DataTypes-Operators

Which of the following is NOT a data types in java

• int

• String

• number

• double

What is right way of defining String variable?

• String name = "John";

• String name = "John"

• String name = John;

• String name "John";

int x = 5;

int y = 6

int z = 50;

System.out.println(x + y + z);

What will be the output?

• 61

• 5650

• 66

• x + y + z

Based on, the general rules for constructing names for variables.

Pick false statement.

• Names can contain letters, digits, underscores, and dollar signs.

• Names are NOT case sensitive

• Reserved words (like Java keywords, such as int or String) cannot be used as names

• Names can also begin with $ and _

which of the following is NOT a simple data type?

• byte

• array

• char

• boolean

Which of the following is assignment operator?

• ==

• =

• =+

• ++

int x = 10;

x += 5;

System.out.println(x);

What will be the output?

• 15

• 5

• 55

• x5

a symbol for an unknown value; usually a letter (such as a, x, or y) is the symbol used

• constant

• variable

• coefficient

• term

Tags

CCSS.6.EE.A.2B

a symbol (+, x, -, or ÷) representing a mathematical operation

• term

• operator

• expression

• constant

Tags

CCSS.6.EE.A.2B

How do you declare a variable?

• var = firstName = ' jane';

• var firstName = 'jane';

• var 'firstName' = jane;

• var firstName == 'jane';