I am working on an application that requires me to change the number of spaces dynamically. Every time i need to increase the spaces by one. I know the logic behind it, but I couldn't find any documentation to help with the syntax.
System.out.printf("%3s", " ");
the code above is inside a nested loop, I would like the number 3 to be dynamic. the number needs to be a variable in order to accomplish what I need it to do. how can I set the number before s to a variable?
Like:
int gap = 3;
System.out.printf("%" + gap + "s", " ");
String space = ""
for(int i = 0; i < 5; i++){
space += " ";
System.out.printf("%s", i + space + ",");
}
In, formating print output, Format specifiers begin with a percent sign (%) and end with a converter(s). The converter is a character indicating the type of argument to be formatted. In between the percent sign (%) and the converter you can have optional flags and specifiers(width, precision, sign).
long n = 461012;
System.out.format("%08d%n", n); // prints "00461012"
in the above example:
d is a converter specifying our target parameter n to be printed as decimal integer. 08 is a flag: specifying the printed decimal integer should be eight characters in width, with leading zeroes as necessary.Check the documentation : Class Formatter and Formatting Numeric Print Output
