Java: Java Programming For Beginners a simple Start To Java Programming (Written By a software Engineer)

The appendreplacement and appendtail Methods:
The  Matcher  class  additionally  gives  appendreplacement  and  appendtail  routines  to
content substitution.
PatternSyntaxException Class Methods:
A PatternSyntaxException is an exception, which is unchecked. This exception indicates a
syntactical error in the pattern of the regular expression. The PatternSyntaxException class
offers the following methods to the developer for use.
public int getIndex()
This function returns the index of error.

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public String getDescription()
This function returns the description of error.
public String getMessage()
This function returns the description and index of error.
public String getPattern()
This function returns the error-causing regular expression pattern.

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Methods
A Java method is an accumulation of explanations that are gathered together to perform an
operation.  When  you  call  the  System.out.println  function,  for  instance,  the  framework
executes a few articulations so as to show a message on the output screen. Presently, you
will  figure  out  how  to  make  your  own  routines  with  or  without  return  qualities,  call  a
method  with  or  without  parameters,  over-loaded  methods  utilizing  the  same  names,  and
apply method deliberation in the system plan.