Java String: indexOf()

find the position of the first occurrence of the string within a string

/**
* * This example show how to find the position of a character in a string.
*
*/
public void indexOfExample1()
{
   String str;
   int position;
   char COMMA = ',';

   str = "Student, Joe";

   // find the position of the first occurance of the comma in str
   position = str.indexOf(COMMA);

   // output the position and the string
   System.out.println(position);
   System.out.println(str);
}

public void indexOfExample2()
{
   String str;
   int position;
   char ch = 'z';

   str = "Student, Joe";

   // a character that is not in the string returns a -1
   position = str.indexOf(ch);

   // output the position and the string
   System.out.println(position);
   System.out.println(str);
}

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