What's the difference between System.out.println and System.out.printf in java??

Answer 1

printf function doesn't create a new line after printing on screen...
While println function creates a new line after printing the string inside argument.

for example:
System.out.printf("hi");
System.out.printf("hello");
System.out.println("okay");
System.out.println("oooh");

Output :
hihellookay
oooh

Answer 2

System.out.println prints the statement and moves to the next line
System.out.printf and System.out.print print the statement and remains in the same line

Answer 3

println function creates a new line.
printf function creates or doesn't create a new line. Moreover, you can give a format to any data types.

For example:
double a = 12.3347;
System.out.printf("%.2f\n", a);
Output: 12.33
\n <-- creates a new line.