스윙(Swing) JTable 행 헤더 생성

[주인장]

1. 행 헤더 생성 

- JScrollPane이 열 헤더의 뷰 포트 뿐만 아니라 행 헤더의 뷰 포트도 제공하기 때문에 매우 쉽게 구현할 수 있다. 

- RowNumberTableModel.java

import javax.swing.JTable;

import javax.swing.table.AbstractTableModel;

public class RowNumberTableModel extends AbstractTableModel {

private JTable mainTable;

public RowNumberTableModel(JTable table) {

mainTable = table;

}

@Override

public int getColumnCount() {

return 1;

}

@Override

public int getRowCount() {

return mainTable.getModel().getColumnCount();

}

@Override

public Object getValueAt(int row, int column) {

return new Integer(row + 1);

}

}

- RowNumberHeader.java

import javax.swing.JComponent;

import javax.swing.JTable;

import javax.swing.LookAndFeel;

import jtable.datamodel.RowNumberTableModel;

public class RowNumberHeader extends JTable {

private JTable mainTable;

public RowNumberHeader(JTable table){

mainTable = table;

setModel(new RowNumberTableModel(mainTable));

setPreferredScrollableViewportSize(getMinimumSize());

setRowSelectionAllowed(false);

JComponent renderer = (JComponent) getDefaultRenderer(Object.class);

LookAndFeel.installBorder(this, "TableHeader.cellBorder");

}

@Override

public int getRowHeight(int row) {

return mainTable.getRowHeight();

}

}

- 열 헤더 추가 

JScrollPane sp = new JScrollPane(table); // 테이블에 스크롤 추가 

// 열 헤더 추가 

JViewport jvp = new JViewport();

jvp.setView(new RowNumberHeader(table));

sp.setRowHeader(jvp);

add(sp, BorderLayout.CENTER);

- 결과 :