Methods of Wrapper Class

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The following methods are to be covered:

  • int parseInt(String s),
  • long parseLong(String s),
  • float parseFloat(String s),
  • double parseDouble(String s),
  • boolean isDigit(char ch),
  • boolean isLetter(char ch),
  • boolean isLetterOrDigit(char ch),
  • boolean isLowerCase(char ch),
  • boolean isUpperCase(char ch),
  • boolean isWhitespace(char ch),
  • char toLowerCase (char ch)
  • char toUpperCase(char ch)
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