Operator Concept in Java:-
It is used to perform operations using operand, the operand can be variable, constant, or literals.
int a=10; a is the variable,10 is the literals
System.out.println(100+200) ; 100 ,200 is called literals.
.....................................................................................................................................
The operator will be called by a symbol but defined as a method, for example, if we use + operator then + is the symbol but it has defined as a +() method
Operator +(param1)
{
}
Type of Operator:-
1) Unary Operator:- This operator will work using a single operand.
1.1 Increment:- increase current value by one
1.1.1 Post Increment:- operand++
First complete other operation(print, assign) then increase the value
int a=5;
int b;
b=a++;
System.out.println(a,",",b);
The expected output is b=5 and a=6
1.1.2 Pre Increment:- ++operand
First increase value by one after that complete other operation
int a=5;
int b;
b=++a;
System.out.println(a,",",b);
class Incre
{
public static void main(String args[])
{
int a=2,b=3;
System.out.println(a++ + "," + ++b );
}
}
The expected output is a=2 and b=4
Example of Increment |Decrement:-
class Incre
{
public static void main(String args[])
{
int a=2,b=3;
b= a++ + a++ + a++ + a++;
// 14 2 3 4 5 6
System.out.println(a + "," + b);
}
}
class Incre
{
public static void main(String args[])
{
int a=2,b=3;
b = ++a + a++ + ++a + a++;
// 16 3 3 5 5 6
System.out.println(a + "," + b);
}
}
1.2 Decrement
class Incre
{
public static void main(String args[])
{
int a=12,b=3;
b = --a + a-- + --a + a--;
// 40 11 11 9 9 8
System.out.println(a + "," + b);
}
}
2) Binary Operator:-
It requires a minimum of two operands to perform the operation.
2.1 ) Arithmetic Operator:- +,-,*,/,%
2.2) Conditional Operator:- <,>,<=,>=
2.3) Comparison Operator:- ==
2.4) Assignment Operator
2.4.1) Simple =
2.4.2) Complex +=,-=,*=,/=,%=
a+=7 or a=a+7
a-=3 or a=a-3
2.5) Logical Operator:- &&,||,!
&& :- it return true when all condition will be true
|| :- it return true when particular condition will be true
! :- it is opposite of true statement and converted result into false statement
a=9
a>2 && a<5
a>2 or a<5
3) Ternary Operator:-
a>2 && a<5
a>2 or a<5
3) Ternary Operator:-
It is used to solve the condition-based problems using a single-line statement. Ternary operators contain a minimum of three operators to solve statements.
res = (condition)?true:false;
WAP to check that the entered number is even or odd using the ternary operator
class CheckEvenOdd
{
public static void main(String args[])
{
int num=4;
String s = (num%2==0)?"Even":"Odd";
System.out.println(s);
}
}
class Checkgreater
{
public static void main(String args[])
{
int a=2,b=5;
String s = (a>b)?"a is greater":"b is greater";
System.out.println(s);
}
}
WAP to calculate electricity bill where unit price and total consumption will be assigned by the user?
WAP to calculate the area of the circle?
WAP to reverse a five-digit number where the first digit and last digit will be the same?
eg:- 12345 o/p 14325
WAP to perform the addition of complex numbers?
eg: 2+3i, 4+5i = 6+8i
WAP to check vowel and consonant?
WAP to check Leap Year?
WAP to check that today is Sunday or not?
WAP to check that number is divisible by 3 and 5 both or not?
WAP to check that char is numeric or alphabets?
WAP to check the greatest number?
hint:-
int a=2,b=45,c=30;
String s = (a>b && a>c)? "a is greatest":(b>c)?"b is greatest":"c is greatest";
import java.util.Scanner;
ReplyDeleteclass Checknumber
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
char ch;
System.out.println("Enter char");
ch=sc.next().charAt(0); // "h"
String s = (ch>=48 && ch<=57)?"numeric":"other";
System.out.println(s);
}
}
Program of Greatest Number Solved in class by me import java.util.Scanner;
ReplyDeleteclass Checkgrt
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
int a=1000,b=2000,c=3000;
String s = (a>b && a>c)?"a is greatest":(b>c?" b is greatest":" c is
greatest");
System.out.println(s);
}
}
class Revv
ReplyDelete{
public static void main(String args[])
{
int a=12345;
int d1,d2,d3,d4,d5,rev,temp;
temp=a;
d5=a%10;
a=a/10;
d4=a%10;
a=a/10;
d3=a%10;
a=a/10;
d2=a%10;
a=a/10;
d1=a;
a=temp;
rev=d1*10000+d4*1000+d3*100+d2*10+d5;
System.out.println("The reverse of "+a+" without changing the first and the last digit is: "+rev);
}
}
class Vowel
ReplyDelete{
public static void main(String args[])
{
char ch='m';
int i=0;
switch(ch)
{
case 'a':
case 'e':
case 'i':
case 'o':
case 'u':
case 'A':
case 'E':
case 'I':
case 'O':
case 'U':i++;
}
if(i==1)
{
System.out.println(ch+" is a Vowel");
}
else
{
if((ch>='a'&&ch<='z')||(ch>='A'&&ch<='Z'))
{
System.out.println(ch+" is a Consonent");
}
else
{
System.out.println(ch+" is not an alphabet");
}
}
}
}
class Leap
ReplyDelete{
public static void main(String args[])
{
int year=1900;
if(((year%4==0)&&(year%100!=0))||(year%400==0))
{
System.out.println("Leap Year");
}
else
{
System.out.println("Not a Leap Year");
}
}
}
class Sunday
ReplyDelete{
public static void main(String args[])
{
String s= "monday";
if(s=="sunday")
{
System.out.println("Weekend yay!");
}
else
{
System.out.println("Not a holiday!");
}
}
}
class Div
ReplyDelete{
public static void main(String args[])
{
int d=15;
String s=((d%3==0)&&(d%5==0))?"Yes":"No";
System.out.println(s);
}
}
class Grt
ReplyDelete{
public static void main(String args[])
{
int x=4,y=1,z=3;
String s=(x>y&&x>z)?"x is greatest":(y>z)?"y is greatest":"z is greatest";
System.out.println(s);
}
}
class Numalph
ReplyDelete{
public static void main(String args[])
{
char c='4';
String s=(c>=48&&c<=57)?"Numeric":"Alphabet";
System.out.println(s);
}
}
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