Find and identify the error in each of the following code segments. No correction is needed just identify the error(s).

1. int number = 99; String str;

// Convert number to a string. str.valueOf(number);

2. // Store a name in a StringBuilder object. StringBuilder name = "Joe Schmoe";

3. int number; String str = "99";

// Convert str to an int. number = str.parseInt();

4. // Change the very first character of a // StringBuilder object to 'Z'. str.setCharAt(1, 'Z');

5. // Tokenize a string that is delimited // with semicolons. The string has three tokens. StringTokenizer strTokenizer = new StringTokenizer("One;Two;Three"); // Extract the three tokens from the string. while (strTokenizer.hasMoreTokens()) {

System.out.println(strTokenizer.nextToken());

}