The March of Progress, by Cay Horstmann
1980: C
printf("%10.2f", x);
1988: C++
cout << setw(10) << setprecision(2) << showpoint << x;
1996: Java
java.text.NumberFormat formatter = java.text.NumberFormat.getNumberInstance();
formatter.setMinimumFractionDigits(2);
formatter.setMaximumFractionDigits(2);
String s = formatter.format(x);
for (int i = s.length(); i < 10; i++) System.out.print(' ');
System.out.print(s);
2004: Java
System.out.printf("%10.2f", x);
2014: JAVA
LAMBDA EXPRESSIONS