Operators

 Operators in Java can be classified into  6 types:

1. Arithmetic operators   2. Assignment operators   3. Relational operators   4. Logical operators

5. Unary operators    6. Bitwise operators

1. Arithmetic operators: are used to perform operations on variables and data.

+: addition

-: subtraction

*: multiplication

/: division

%: remainder, modulus, mod

2. Assignment operators: are used in Java to assign values to variables. 

=;   +=;   -=;   *=;   /=;   %=

3. Relational operators:  are used to check the relationship between two operands. It returns either true or false

==: is equal to

!=: not equal to

>: greater than

<: less than

>=: greater than equal to

<=: less than equal to

4. Logical operators: are used to check whether an expression is true or false. They are used in decision making. 

&& (Logical AND) 

|| (Logical OR) 

! (Logical NOT)

5. Unary operators: are used with only one operand.

+: unary plus. not necessary to use since numbers are positive without using it

-: unary minus. inverts the sign of an expression

++: increment operator

--: decrement operator

!: logical complement operator. inverts the value of a boolean.

6. Bitwise operators: are used to perform operations on individual bits.

~: bitwise complement

<<: left shift

<<: right shift

>>>: unsigned right shift

&: bitwise AND

^: bitwise exclusive OR

|: bitwise OR

Java Ternary operation

boolean b = false;

        int x = (int) (Math.random() * 1000);
        int y = (int) (Math.random() * 1000);
        int z = (int) (Math.random() * 1000);
//      x = 100;
//      y = 20;
//      z = 30;

        b = x < y && (x < z ? true : false);
        System.out.println(b);

        b = x < y ? x < z ? true : false : false;
        System.out.println(b);

        b = (x < y ? (x < z ? true : false) : false);
        System.out.println(b);

Questions:

1.

int i = 0;
System.out.println(i);
i = i++;
System.out.println(i); 
i = i++ + 2;
System.out.println(i);

2.

int a = 10, b = 20;

int c = a > 20 ? b > 30 ? 10 : 20 : 30;
System.out.println(c);