Java Swing JTable点击表头选中和取消选中列

忘是亡心i 2022-05-01 12:06 528阅读 0赞

在JTable中单击表头是不会自动选中列的，也没有接口可以直接在JTable中获取到表头的点击事件，只能通过监听JTableHeader的鼠标事件来做出响应。

JTableHeader tableHeader = table.getTableHeader();
    		tableHeader.setPreferredSize(new Dimension(tableHeader.getWidth(), 35));
    		tableHeader.addMouseListener(new MouseListener() {
    			
    			@Override
    			public void mouseReleased(MouseEvent e) {
    				// TODO Auto-generated method stub
    				int choose = tableHeader.columnAtPoint(e.getPoint()); 
    				System.out.println("========="+choose);
    				table.addColumnSelectionInterval(choose, choose);
    				
    			}
    			
    			@Override
    			public void mousePressed(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    			
    			@Override
    			public void mouseExited(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    			
    			@Override
    			public void mouseEntered(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    			
    			@Override
    			public void mouseClicked(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    		});

实现效果如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L292ZWp1cg_size_16_color_FFFFFF_t_70][]

但是这样选中后不能取消选中的状态，那么再做个取消选中的判断。

private int[] chooses;
    
    		chooses= new int[columnTitle.length];
    		for(int choose : chooses) {
    			chooses[choose] = -1;
    		}
    
    
    		JTableHeader tableHeader = table.getTableHeader();
    		tableHeader.setPreferredSize(new Dimension(tableHeader.getWidth(), 35));
    		tableHeader.addMouseListener(new MouseListener() {
    			
    			@Override
    			public void mouseReleased(MouseEvent e) {
    				// TODO Auto-generated method stub
    				int pick = tableHeader.columnAtPoint(e.getPoint()); 
    				if(chooses[choose] == -1 || chooses[choose] == 0) {
    					chooses[choose] = 1;
    					table.addColumnSelectionInterval(choose, choose);
    				} else {
    					chooses[choose] = -1;
    					table.removeColumnSelectionInterval(choose, choose);
    				}
    				
    			}
    			
    			@Override
    			public void mousePressed(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    			
    			@Override
    			public void mouseExited(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    			
    			@Override
    			public void mouseEntered(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    			
    			@Override
    			public void mouseClicked(MouseEvent e) {
    				// TODO Auto-generated method stub
    				
    			}
    		});

搞定。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L292ZWp1cg_size_16_color_FFFFFF_t_70]: /images/20220119/2ab708a83d164bf299b8367bc47e2b09.png