Java StringBuffer indexOf(String str, int fromIndex) Method Explained | Java Tutorial

In this Java tutorial, we delve into the `indexOf(String str, int fromIndex)` method of the StringBuffer class. This method allows you to find the index of the first occurrence of a specified string within the StringBuffer, starting the search from a particular index position.

**Description:**
The `indexOf(String str, int fromIndex)` method in Java StringBuffer searches for the specified string within the StringBuffer object, starting the search from the given index (`fromIndex`). If the string is found, it returns the index of the first occurrence of the specified string within the StringBuffer. If the string is not found, it returns -1.

**Syntax:**
```java
public int indexOf(String str, int fromIndex)
```

**Parameters:**
- `str`: The substring to search for.
- `fromIndex`: The index from which to start the search.

**Returns:**
- The index of the first occurrence of the specified substring within the StringBuffer, starting from the specified index (`fromIndex`), or -1 if the substring is not found.

**Example:**
```java
StringBuffer sb = new StringBuffer("Hello World");
```

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Java StringBuffer [indexOf(String str, int fromIndex) method] | Java Tutorial

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