Java tutorial#part3

Hello friends today we will discuss more on data types.



So, let's start,
               if we write something like this:



class main{
public static void main(String[] args){
int a=1;
int b=2;
System.out.println(a+b);

}

}

Then the output will be: 3
!!!!Attention not: 12


But if we write something like this then:


class main{
public static void main(String[] args){
int a=1;
int b=2
System.out.println(a+""+b);

}
}

Then the output will be: 12



Also the same with char & Strings.
Here's the code

class main{
public static void main(String[] args){
String i="hello";
String y="world";
System.out.println(i+" "+y);

}
}

OUTPUT: hello world

We can also arithmetical operations:

class main{
public static void main(String[] args){
int a=3, b=2;
System.out.println(a+b);
System.out.println(a-b);
System.out.println(a*b);
System.out.println(a/b);

}
}

OUTPUT: 5
                  1
                  6
                  1
BUT Why the a/b is not returning a decimal value:

             Because we have to typecast it to float like this:

class main{
public static void main(String[] args){
int a=3, b=2;
System.out.println((float)a/b);
}
}

Then the output will be: 1.5


So see you next time. bye!!


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