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evan1v1123
evan1v1123
13.09.2019 • 
Engineering

Write a java class named numberconverter that provides methods to accept strings of binary, octal or hexadecimal numbers and converts them to the decimal equivalent string. the class should provide the methods binaryconverter, octalconverter and hexadecimalconverter.
the method binaryconverter parses an input string of a binary number and converts it to a string representation of the decimal equivalent.
the method octalconverter parses an input string of an octal number and converts it to the decimal equivalent string.
the method hexadecimalconverter parses an input string of a hexadecimal number and converts it to the decimal equivalent string.
in the implementation of each method, include an exception handler to throw an exception if the input string is not in the proper format for the appropriate number in java. if the number is correctly formatted, return the string representation of the decimal conversion, otherwise return the message the exception handler generates.
ensure that the input numbers only include the digits appropriate for the base.
the exceptions your methods create must keep track of the first illegal character that occurred in the string and report its position and the character itself. include an appropriate text message indicating why the exception was thrown.
in java, binary numbers begin with a 0, are followed by an upper or lower case ‘b’ and only consist of the digits 0 and 1.
octal numbers begin with a 0 and only consists of the digits 0 through 7.

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