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An operator is a symbol or character used to perform an operation. Take a good look at this
A + B
" + " Is the operator used here.
Types of Operator in Java
• Arithmetic Operator
• Assignment Operator
• Auto - increment and decrement operator
• Comparison Operator
• Logical Operator
• Bitwise operator
• Ternary operator
Arithmetic Operator
When we talk of arithmetic operator, we are talking about the general basic operator we use regularly to add , subtract , divide and multiply.
The operators are represented by + , - , * , / , %
Let's take a Java example on this.
public class sample {
public static void main(String[] args) {
int number1 = 10, number2 = 5, result;
// Using addition operator
result = number1 + number2;
System.out.println("number1 + number2 = " + result);
// Using subtraction operator
result = number1 - number2;
System.out.println("number1 - number2 = " + result);
// Using multiplication operator
result = number1 * number2;
System.out.println("number1 * number2 = " + result);
// Using division operator
result = number1 / number2;
System.out.println("number1 / number2 = " + result);
// Using remainder operator
result = number1 % number2;
System.out.println("number1 % number2 = " + result);
}
}
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Results
Assignment Operator
Assignment operator are slightly different from the general arithmetic operator. They are += , -= , *= , /= , %= and = .
X += Y
The assignment operator above us simply saying that x = x + y
Hope your u grab that, now let's go straight to the example.
public class sample {
public static void main(String args[]) {
int num1 = 20;
int num2 = 40;
num2 = num1;
System.out.println("= Result: "+num2);
num2 += num1;
System.out.println("+= Result: "+num2);
num2 -= num1;
System.out.println("-= Result: "+num2);
num2 *= num1;
System.out.println("*= Result: "+num2);
num2 /= num1;
System.out.println("/= Result: "+num2);
num2 %= num1;
System.out.println("%= Result: "+num2);
}
}
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Results
Auto Increment and decrement operator.
As the name implies, the operators job is to either auto-increase or auto-decrease the values given.
If x = 5 and y = 8 and x is set to auto-increase and y is set to auto-decrease, then the value of x will be 6 and y will be 7.
This is simply x = x + 1 and y = y -1
Here is how to code in Java
//by Zhullyblog
public class sample {
public static void main(String args[]){
int num1=5;
int num2=10;
//auto increment
num1++;
//auto decrement
num2--;
System.out.println("num1++ is: "+num1);
System.out.println("num2-- is: "+num2);
}
}
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Results
Comparison Operator
Comparison Operator is used to compare two variables.
Let's take an instance in Java
//by Zhullyblog
public class sample {
public static void main(String args[]) {
int num1 = 5;
int num2 = 10;
//check if num1 and num2 are equal
if (num1==num2) {
System.out.println("num1 and num2 are equal");
}
else{
System.out.println("num1 and num2 are not equal");
}
//check if num1 and num2 are not equal
if( num1 != num2 ){
System.out.println("num1 and num2 are not equal");
}
else{
System.out.println("num1 and num2 are equal");
}
//check if num1 is greater than num2
if( num1 > num2 ){
System.out.println("num1 is greater than num2");
}
else{
System.out.println("num1 is not greater than num2");
}
//check whether num1 is less than num2
if( num1 < num2 ){
System.out.println("num1 is less than num2");
}
else{
System.out.println("num1 is not less than num2");
}
//check whether num1 is greater than or equal to num2
if( num1 >= num2 ){
System.out.println("num1 is greater than or equal to num2");
}
else{
System.out.println("num1 is less than num2");
}
//check whether num1 is less than or equal to num2
if( num1 <= num2){
System.out.println("num1 is less than or equal to num2");
}
else{
System.out.println("num1 is greater than num2");
}
}
}
Screenshot
Results
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