java 仅使用行中包含的值获取 JTable 中的行索引？
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Getting a row index in a JTable using only a value included in the row?
提问by ricgeorge
In Java, is it possible in a JTable to obtain a row's index by looking for a specified value contained in that row? I am using a custom table model. For example, consider a table with three columns and three rows:
在 Java 中，是否可以在 JTable 中通过查找包含在该行中的指定值来获取该行的索引？我正在使用自定义表模型。例如，考虑一个包含三列三行的表：
Row 1 = A, B, C
Row 2 = D, E, F
Row 3 = G, H, I
If all I know is that there is a value of "F" somewhere in the table, how can I find out the index of the row where the value "F" is?
如果我只知道表中某处有一个“F”值，我怎样才能找出值“F”所在行的索引？
回答by Hui Zheng
If table model is available, a brute-force way is to loop it by row and column and compare the given value(say, 'F') with the result of getValueAt(row, column). Sample code:
如果表模型可用，一个蛮力的方法是按行和列循环它并将给定的值（例如，'F'）与getValueAt(row, column). 示例代码：
int getRowByValue(TableModel model, Object value) {
for (int i = model.getRowCount() - 1; i >= 0; --i) {
for (int j = model.getColumnCount() - 1; j >= 0; --j) {
if (model.getValueAt(i, j).equals(value)) {
// what if value is not unique?
return i;
}
}
}
}
回答by GGrec
private int returnRowIndexForValue(final String value) {
for (int i = 1; i <= table.getRowCount(); i++)
for(int j = 1; j <= table.getColumnCount(); j++)
if (table.getValueAt(i, j).equals(value))
return i;
}
回答by Amarnath
Just in case if there are multiple rowsthat are containing the value then return the return the Integer List.
以防万一，如果有multiple rows包含值然后返回返回Integer List.
private List<Integer> getRowIndexesOfValue(String value, JTable table) {
List<Integer> rowNumbers = new ArrayList<Integer>();
for(int rowCount = 0; rowCount < table.getRowCount(); rowCount++) {
for(int columnCount = 0; columnCount < table.getColumnCount(); columnCount++) {
if(table.getvalueAt(rowCount, columnCount).toString().equals(value)) {
rowNumbers.add(rowCount);
break;
}
}
}
return rowNumbers;
}
