Java tutorial
/* * Copyright (c) 2012-2013, bad robot (london) ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package bad.robot.excel.cell; import bad.robot.excel.column.ColumnIndex; import bad.robot.excel.style.NoStyle; import bad.robot.excel.style.Style; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Workbook; import static java.lang.String.format; import static org.apache.poi.ss.usermodel.Cell.CELL_TYPE_FORMULA; public class FormulaCell extends StyledCell { private final String formula; public FormulaCell(String formula) { this(formula, new NoStyle()); } public FormulaCell(Formula formula) { this(formula.value()); } public FormulaCell(String text, Style style) { super(style); this.formula = text; } @Override public void addTo(Row row, ColumnIndex column, Workbook workbook) { org.apache.poi.ss.usermodel.Cell cell = row.createCell(column.value(), CELL_TYPE_FORMULA); update(cell, workbook); } @Override public void update(org.apache.poi.ss.usermodel.Cell cell, Workbook workbook) { this.getStyle().applyTo(cell, workbook); cell.setCellFormula(formula); } @Override public String toString() { return format("Formula:%s", formula); } }