Direttamente dalla documentazione ufficiale di java 1.4.2
codice:
StringBuffer insert(int offset, boolean b)
Inserts the string representation of the boolean argument into this string buffer.
StringBuffer insert(int offset, char c)
Inserts the string representation of the char argument into this string buffer.
StringBuffer insert(int offset, char[] str)
Inserts the string representation of the char array argument into this string buffer.
StringBuffer insert(int index, char[] str, int offset, int len)
Inserts the string representation of a subarray of the str array argument into this string buffer.
StringBuffer insert(int offset, double d)
Inserts the string representation of the double argument into this string buffer.
StringBuffer insert(int offset, float f)
Inserts the string representation of the float argument into this string buffer.
StringBuffer insert(int offset, int i)
Inserts the string representation of the second int argument into this string buffer.
StringBuffer insert(int offset, long l)
Inserts the string representation of the long argument into this string buffer.
StringBuffer insert(int offset, Object obj)
Inserts the string representation of the Object argument into this string buffer.
StringBuffer insert(int offset, String str)
Inserts the string into this string buffer.