Operators

Operators in Java are special symbols to perform specific tasks on operands. Operators can be classified into the following types: arithmetical, relational, increment/ decrement, logical and assignment. Operations are represented by
operators. The objects of operations are referred to as operands. Operators can be unary, binary or ternary. When an integer and a floating point number are used as operands to a single arithmetic operation, the result is a floating point. The integer is implicitly converted to a floating point number before the operation takes place. Unary increment operator (+ +) increases the value of an operand by 1.Arithmetic operators are used to perform arithmetic operations, such as addition subtraction and multiplication. The arithmetic operators are of two types: unary operators and binary operators. The relational operators are used to compare two values and determine the relationship between them. The increment operator (++) adds 1 to operand’s value. The decrement operator (--) subtracts 1 from operand’s value. The logical operators are used to evaluate multiple conditions together as a single expression. The assignment operator is used to update the value of a variable. Relational operators have lower precedence than that of arithmetic operators. Logical operator ( ! ) has precedence higher than that of any of the relational or arithmetic operator.

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  • Q1

    Which operator is used to compare two values, = or ==?

    Marks:1
    Answer:

    The == operator is used for comparison of two values and = is used for assignment of the values.

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  • Q2

    Explain the following code sample:
    result = someCondition ? value1 : value2;

    Marks:1
    Answer:

    This code should be read as: "If someCondition is true, assign the value of value1 to the result, otherwise assign the value of value2 to the result."

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  • Q3

    What are operands?

    Marks:1
    Answer:

    Operands are the values and variables on which operators are applied.

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  • Q4

    Which type of operators act upon two operands?

    Marks:1
    Answer:

    Binary operators

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  • Q5

    What are operators?

    Marks:1
    Answer:

    Operators are the special symbols/tokens that perform specific tasks on a number of particular types of operands.

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