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Java Java Objects Meet Objects Creating Classes

G H Mahimaanvita
G H Mahimaanvita
16,234 Points
Posted by G H Mahimaanvita
G H Mahimaanvita
16,234 Points

println & printf

Can printf perform all the actions that println does?

1 Answer

Milos Sretin
Milos Sretin
21,937 Points

println() prints a new blank line and then your message.
printf() provides string formatting similar to the printf function in C.
printf() is primarily needed when you need to print big strings to avoid string concatenaion in println() which can be confusing at times. (Although both can be used in almost all cases).

Example.

int a = 10;
int b = 20; 

println("a: " + a + " b: " + b);    // Tedious String Concatenation
printf("a: %d b: %d\n", a, b);      // Output using string formatting.

While printf() enables you to print fractional outputs up to any decimal place in a single line, the same task using println() can get very complex.

Example.

printf("%.6f", x);  // prints x up to 6 decimal places.