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Showing content from https://docs.oracle.com/javase/8/docs/api/java/util/regex/PatternSyntaxException.html below:

PatternSyntaxException (Java Platform SE 8 )

java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - java.lang.IllegalArgumentException
      - java.util.regex.PatternSyntaxException

- Constructor Summary
- Method Summary All Methods Instance Methods Concrete Methods Modifier and Type Method Description String getDescription()
  Retrieves the description of the error.
  int getIndex()
  Retrieves the error index.
  String getMessage()
  Returns a multi-line string containing the description of the syntax error and its index, the erroneous regular-expression pattern, and a visual indication of the error index within the pattern.
  String getPattern()
  Retrieves the erroneous regular-expression pattern.
  - Methods inherited from class java.lang.ThrowableaddSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
  - Methods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - PatternSyntaxException
```
public PatternSyntaxException(String desc,
                              String regex,
                              int index)
```
    Constructs a new instance of this class.
    
    Parameters:
    
    desc - A description of the error
    
    regex - The erroneous pattern
    
    index - The approximate index in the pattern of the error, or -1 if the index is not known
- Method Detail
  - getIndex
```
public int getIndex()
```
    Retrieves the error index.
    
    Returns:
    
    The approximate index in the pattern of the error, or -1 if the index is not known
  - getDescription
```
public String getDescription()
```
    Retrieves the description of the error.
    
    Returns:
    
    The description of the error
  - getPattern
```
public String getPattern()
```
    Retrieves the erroneous regular-expression pattern.
    
    Returns:
    
    The erroneous pattern
  - getMessage
```
public String getMessage()
```
    Returns a multi-line string containing the description of the syntax error and its index, the erroneous regular-expression pattern, and a visual indication of the error index within the pattern.
    
    Overrides:
    
    getMessage in class Throwable
    
    Returns:
    
    The full detail message

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