Can anyone tell why I'm getting the following output in System.out.println(1+2+” = “+1+2); and output is 3=12??

Answer 1

The value inside the () is getting evaluated from left to right.

First it looks at 1+2 and evaluates to 3.

Then it sees you want to add the string " = " to it, and therefore turns the three into a sting.

Now when you want to add 1 to the string it adds it onto the string, so "3 = " + 1 turns into "3 = 1", and then the two gets added to the end as well.

You can use parenthesis to make it evaluate the numbers first and then print the string like this:

System.out.println((1+2) + " = " +(1+2));

Now the 1+2 gets added first on both ends before the answers get turned into a string.

Hope this helps clear up the confusion :)

Answer 2

thnks frans