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Budget web hosting - JavaSercer Pages Example 17.12. The Row’s Column Value

JavaSercer Pages Example 17.12. The Row’s Column Value Access Methods public BigDecimal getBigDecimal(int columnIndex) throws NoSuchColumnException, UnsupportedConversionException { Column col = null; try { col = columns[columnIndex - 1]; } catch (ArrayIndexOutOfBoundsException e) { throw new NoSuchColumnException(String.valueOf(columnIndex)); } return col.getBigDecimal( ); } public BigDecimal getBigDecimal(String columnName) throws NoSuchColumnException, UnsupportedConversionException { return getBigDecimal(getIndex(columnName)); } public boolean getBoolean(int columnIndex) throws NoSuchColumnException, UnsupportedConversionException { Column col = null; try { col = columns[columnIndex - 1]; } catch (ArrayIndexOutOfBoundsException e) { throw new NoSuchColumnException(String.valueOf(columnIndex)); } return col.getBoolean( ); } public boolean getBoolean(String columnName) throws NoSuchColumnException, UnsupportedConversionException { return getBoolean(getIndex(columnName)); } … public String getString(int columnIndex) throws NoSuchColumnException { Column col = null; try { col = columns[columnIndex - 1]; } catch (ArrayIndexOutOfBoundsException e) { throw new NoSuchColumnException(String.valueOf(columnIndex)); } return col.getString( ); } public String getString(String columnName) throws NoSuchColumnException { return getString(getIndex(columnName)); } All these methods locate the Column subclass instance specified by the argument and call the corresponding method on the instance. Except for the getString( ) method, this call results in an UnsupportedConversionException if the column is not of the requested type. All types can be converted to a String, however, so a getString( ) call is successful provided that the requested column exists. page 248
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