String API in Java | #46 | indexOf() and lastIndexOf() Methods of the StringBuffer Class in Java

public int indexOf(String str) : 0:14
Returns the index within this string of the first occurrence of the specified substring.

public int indexOf(String str, int fromIndex) : 2:22
Returns the index within this string of the first occurrence of the specified substring, starting at the specified index.

public int lastIndexOf(String str, int fromIndex) : 4:55
Returns the index within this string of the last occurrence of the specified substring, searching backward starting at the specified index.

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