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Start your free trialSiddesh Gannu
3,565 PointsWhy don't we use System.out.println("")?
I have learned Java in college and my professor did tell me about the method we used in the video. However, he said that it is easier to just use System.our.println(""); and print out what we desire. Is there any specific reason why we are creating an object for console and then calling the printf method on it?
Thanks
5 Answers
chrisverra
3,760 PointsWhat Grigorij says is not entirely true. you can use it with variables "no change needed" aswel
you can use both, with println you can concatinate
example:
String myName = "Chris";
int age = 27;
System.out.println("My name is " + myName " and I am " + age + " years old.");
you would get: My name is Chris and I am 27 years old.
Grigorij Schleifer
10,365 PointsHi Siddhesh,
printf method gives you the possibility to use formatters like %s or %d. So the code is more flexible and looks cleaner.
For example you create two variables:
String name = "Siddhesh";
String last lastName = "Gannu";
The println looks like this and can create it without the variables.
System.out.println("My name is Siddhesh Gannu");
But if you change the name variables to something else you will need to change the names inside the parenthesis.
// change needed
System.out.println("My name is newName newLastName");
If you use the printf method you can use the old code:
System.out.print("My name is %s %s", name, lastName );
// no change needed
Does it make sense?
Grigorij
Siddesh Gannu
3,565 PointsBut can't we do that with both? Or does it only work in System.out.println
chrisverra
3,760 Pointsright, good point grigorij, i forgot to mention the new line :)
Grigorij Schleifer
10,365 PointsGood teamwork matters!!!
chrisverra
3,760 PointsI don't see a reason to pick a way other than personal preferences. Both can concatinate, both can use variables.
I have no idea what would be better.
I tend to use system.out.println, because then i can see what gets written more easely
with system.out.print i have to look and put the variables in place to see what gets written
Grigorij Schleifer
10,365 PointsHere some more details:
- print(), printf() and prinln() are methods of the PrintStream class
- Both print() and printf() will print the text in the same line without entering a new one
- println() will give you a new line after the text is over and allows you formatting the text
chrisverra
3,760 PointsYeah Buddy!
Grigorij Schleifer
10,365 PointsGrigorij Schleifer
10,365 PointsGreat point Christ,
thanks for completion