Java Basic Operators

Java offers a well-off set of operators to influence variables. We can divide entire Java operators into the subsequent groups −

• Bitwise Operators
• Logical Operators
• Assignment Operators
• Relational Operators
• Misc Operators
• Arithmetic Operators

The Arithmetic Operators

Arithmetic operators are adopted in mathematical expressions in the similar method that they are utilized in algebra. The subsequent table lists the arithmetic operators:

Assume integer uneven A holds 10 and variable B holds 20, then:

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The Relational Operators

There are subsequent relational operators reinforced by the Java language

Assume variable A holds 10 and variable B holds 20, then:

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The Bitwise Operators

Java characterizes numerous bitwise operators, which can be practical to the integer types, long, int, short, char, and byte.

Bitwise operator works on bits and performs a bit-by-bit operation. Assume if a = 60 and b = 13; now in the binary format they will be as follows −

a = 0011 1100

b = 0000 1101

-----------------

a&b = 0000 1100

a'b = 0011 1101

a^b = 0011 0001

~a = 1100 0011

The following table lists the bitwise operators −

Assume integer variable A holds 60 and variable B holds 13 then −

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The Logical Operators

The following table lists the logical operators −

Assume Boolean variables A holds and variable B holds false, then −

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The Assignment Operators

Following are the assignment operators supported by the Java language:

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Miscellaneous Operators

There are few other operators supported by Java Language.

Conditional Operator ( ? : )

The conditional operator is too identified as the ternary operator. This operator is consisted of three operands and is utilized to assess Boolean expressions. The objective of the operator is to choose, which cost should be allocated to the variable. The operator is written as:

variable x = (expression) ? value if true : value if false

Following is an example −

Example

public class Test {

   public static void main(String args[]) {
      int a, b;
      a = 10;
      b = (a == 1) ? 20: 30;
      System.out.println( "Value of b is : " +  b );

      b = (a == 10) ? 20: 30;
      System.out.println( "Value of b is : " + b );
   }
}

This will produce the following result −

Output

Value of b is : 30
Value of b is : 20

instanceof Operator

This operator is utilized only for entity situation variables. The operator verifies whether the object is of an exacting type (class type or interface type). Instanceof operator is written as:

( Object reference variable ) instanceof  (class/interface type)

If the object referred by the variable on the left side of the operator passes the IS-A check for the class/interface type on the right side, then the result will be true. Following is an example:

Example

( Object reference variable ) instanceof  (class/interface type)

If the object referred by the variable on the left side of the operator passes the IS-A check for the class/interface type on the right side, then the result will be true. Following is an example −

Example

public class Test {

   public static void main(String args[]) {

      String name = "James";

      // following will return true since name is type of String
      boolean result = name instanceof String;
      System.out.println( result );
   }
}

This will produce the following result −

Output

true

This operator will still return true if the object being compared is the assignment compatible with the type on the right. Following is one more example −

Example

class Vehicle {}

public class Car extends Vehicle {

   public static void main(String args[]) {

      Vehicle a = new Car();
      boolean result =  a instanceof Car;
      System.out.println( result );
   }
}

This will produce the following result −

Output

true

Precedence of Java Operators

Operator precedence decides the alliance of terms in a look. This influences how a face is appraised. Convinced operators encompass higher preference than others; for case, the increased operator has senior precedence than the adding operator:

For example, x = 7 + 3 * 2; here x is assigned 13, not 20 because operator * has higher precedence than +, so it first gets multiplied with 3 * 2 and then adds into 7.

Here, operators with the highest precedence appear at the top of the table, those with the lowest appear at the bottom. Within an expression, higher precedence operators will be evaluated first.

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