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The following program is simple examples which demonstrate the Logical operators. Copy and paste the following Java program in LogicalOperators.java file, and compile and run this program

Logical AND Operator

 
public class LogicalANDoperator {

   public static void main(String args[]) {
      boolean p = false;
      boolean q = true;

      System.out.println("p && q = " + (p&&q)); 

   }
}

Output

 
p && q = false
Press any key to continue . . .

Logical OR Operator

 
public class LogicalOROperators {

   public static void main(String args[]) {
      boolean p = false;
      boolean q = true;

      System.out.println("p || q = " + (p||q));

   }
}

Output

 
p || q = true
Press any key to continue . . .

Logical NOT Operator

 
public class LogicalONOTperators {

   public static void main(String args[]) {
      boolean p = false;
      boolean q = true;

      System.out.println("!(p && q) = " + !(p && q));

   }
}

Output

 
!(p && q) = true
Press any key to continue . . .

Logical Operator all in all

 
public class LogicalOperators {

   public static void main(String args[]) {
      boolean p = true;
      boolean q = false;

      System.out.println("p && q = " + (p&&q));
      System.out.println("p || q = " + (p||q) );
      System.out.println("!(p && q) = " + !(p && q));
   }
}

Output

 
p && q = false
p || q = true
!(p && q) = true
Press any key to continue . . .

What are the differences between bitwise and logical AND operators

Issues	Bitwise AND	Logical AND
Operator Symbol	A Bitwise And operator is represented as ‘&’	logical operator is represented as ‘&&’
Operator Scope	The bitwise and operator ‘&’ work on Integral (short, int, unsigned, char, bool, unsigned char, long) values and return integral value. Example	The logical and operator ‘&&’ expects its operands to be boolean expressions (either 1 or 0) and returns a boolean value. Error if   Solution
The problem in Operator	If an integer value is used as an operand for ‘&&’ which is supposed to work. Example	If an integer value is used as an operand for ‘&&’ which is supposed to not work Example
Operands behaviour	The bitwise ‘&’ and ‘|’ operators always evaluate their operands.	The '&&' operator doesn’t evaluate the second operand if the first operand becomes false. Similarly '||' doesn’t evaluate the second operand when the first operand becomes true. supposed to not work Example 1   Example 2

Example

 
 public class LogicalANDproblem {

   public static void main(String args[]) {
   int x = 2;
   int y = 3;
   int c = x&y ;
   System.out.println(c);

   }
}

Output

 
2
Press any key to continue . . .

Example Error

 
 public class LogicalOperator {

   public static void main(String args[]) {
   int x = 5;
   int y = 3;
   int c = x&&y ;
   System.out.println(c);

   }
}

Output

 
LogicalANDproblem.java:6: error: bad operand types for binary operator '&&'
   int c = x&&y ;
            ^
  first type:  int
  second type: int
1 error

Solution to this problem

 
 public class LogicalANDsolution {

   public static void main(String args[]) {
   boolean x = true;
   boolean y = false;
   boolean c = x&&y ;
   System.out.println(c);

   }
}

Output

 
false
Press any key to continue . . .

Example

 
 public class BitwiseAND {

   public static void main(String args[]) {
   int x = 6;
   int y = 5;
   int c = x&y ;
   System.out.println(c);

   }
}

Output

 
4
Press any key to continue . . .

Example 1

class OperatorExample{
 public static void main(String args[]){
 int x=11;
 int y=6;
 int c=22;
 System.out.println(x
 

Output 
 
false
false
Press any key to continue . . .


Example 2
 

class OperatorExample{
 public static void main(String args[]){
 int x=11;
 int y=6;
 int c=22;
 System.out.println(x
Output 
 
false
11
false
12
Press any key to continue . . .







                  
                    

                    
                    


        	 

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