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);

}