"[%s]", "cadena normal"

[cadena normal]

  "[%10s]", "cadena normal"

[cadena normal]

  "[%.10s]", "cadena normal"

[cadena nor]

  "[%10s]", "corta"

[     corta]

  "[%-10s]", "corta"

[corta     ]

  "[%10.3s]", "corta"

[       cor]

  "[%-10.3s]", "corta"

[cor       ]

String format =

       String.format("[%%%ds]%%n", 10);

format(format, "corta");

[     corta]