JAVA windoesBuilder 中运用JTable显示数据库数据

刺骨的言语ヽ痛彻心扉 2021-12-15 04:25 176阅读 0赞

**JAVA windoesBuilder 中运用JTable显示数据库数据**

1.  新建JFram类  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70]
2.  打开拖拽窗口Design  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70 1]
3.  拖拽入一个JScrollPane和一个JTable  
    注意：要先拖拽入一个JScrollPane再拖拽一个JTable到JScrollPane里面，这样数据表数据才会自动滚动。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70 2]
4.  然后转到代码页，设置表头

table_1.setModel(new DefaultTableModel(
        		new Object[][] { 
        		},
        		new String[] { 
        			"classID", "className", "classIntroduce"
        		}));

1.  最后调用数据库查询并刷新图标的函数

Function_InitializeClassTable(new ClassTable());

1.  调用数据库查询并刷新图标的函数

public void Function_InitializeClassTable(ClassTable table_Class)
    	{ 
    		//Gets the model object for the table
    		DefaultTableModel defaultTableModel = (DefaultTableModel) table_1.getModel();
    		//Clear the list of tables
    		defaultTableModel.setRowCount(0);
    		 
    		//Obtain class information
    		ClassEdit_Dao class_Dao = new ClassEdit_Dao();
    		
    		/*--------------------------------------------------------------------------------------------------------------------- * getClassList(table_Class) : The 'table_Class' come from 'Function_InitializeClassTable(new Table_Class())' | * | * Attention : The 'table_Class' is null now !!! | *--------------------------------------------------------------------------------------------------------------------- */
    		List<ClassTable> classList = class_Dao.getClassList(table_Class);
    		
    		//Write the obtained class information into the class table
    		for (ClassTable table_Class_ : classList)
    		{ 
    			Vector<String> vector = new Vector<String>();//Implement functions similar to dynamic arrays
    			vector.add(table_Class_.getClassId());
    			vector.add(table_Class_.getClassName());
    			vector.add(table_Class_.getClassinfo());
    			
    			/*------------------------------------------------------------------------------------------------------- * This is an implementation of TableModel thatuses a Vector of Vectors to store thecell value objects. | *------------------------------------------------------------------------------------------------------- */
    			defaultTableModel.addRow(vector);
    		}
    	}

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