StringBuffer str = new StringBuffer("hello world"); char[] ch = new char[5]; str.getChars(0, 5, ch, 0); System.out.println(ch);
StringBuffer str = new StringBuffer("abcde"); char[] ch = new char[3]; str.getChars(1, 4, ch, 0); System.out.println(ch);This code creates a StringBuffer object with the string "abcde". It then creates a character array of length 3 and calls getChars to retrieve the characters in the range of index 1 to 3 (inclusive) of the StringBuffer object and store them in the array. The resulting array is then printed to the console, which outputs "bcd". The StringBuffer getChars method is part of the java.lang package, which is a core package in the Java library.