如果JComboBox 的元素使用add()添加的,就用removeAll()移出。
如果是用addItem()添加的,就用removeAllItems()移出。
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首先,根据行索引获取对应的`JComboBox`,然后调用`removeAllItems`清空当前选项,再根据条件添加新的选项。例如,可以检查当前行的数据,如果满足特定条件,则向`JComboBox`中添加特定的选项。 4. **关联JTable和...
jComboBox2.removeAllItems(); jComboBox2.addItem(sTemp + "A"); jComboBox2.addItem(sTemp + "B"); jComboBox2.setSelectedIndex(0); } } }); ``` - 当用户在 `jComboBox1` 中选择了一个项目时,`...
jComboBox1.removeAllItems(); jComboBox1.addItem(ob3[index][0]); // 添加默认选项 for (int i = 1; i [index].length; i++) { jComboBox1.addItem(ob3[index][i]); } return jComboBox1; } ``` 在这个例子...
cb.removeAllItems(); Object selected = ca.getSelectedItem(); Object[] newItems = ct.b(selected); for (int i = 0; i < newItems.length; i++) cb.addItem(newItems[i]); } }); ``` 5. **构建GUI并...
cityBox.removeAllItems(); cityBox.addItem("请选择"); if (cities != null) { for (String city : cities) { cityBox.addItem(city); } } } }); panel.add(provinceBox); panel.add(cityBox); frame....
combox_city.removeAllItems(); for(int j=0;j[i].length;j++) combox_city.addItem(this.cities[i][j]); } if(e.getSource()==button_add) { String aline=number+","+text_name.getText(); if(radio...
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首先,根据行索引获取对应的`JComboBox`,然后调用`removeAllItems`清空当前选项,再根据条件添加新的选项。例如,可以检查当前行的数据,如果满足特定条件,则向`JComboBox`中添加特定的选项。 4. **关联JTable和...
jComboBox2.removeAllItems(); jComboBox2.addItem(sTemp + "A"); jComboBox2.addItem(sTemp + "B"); jComboBox2.setSelectedIndex(0); } } }); ``` - 当用户在 `jComboBox1` 中选择了一个项目时,`...
jComboBox1.removeAllItems(); jComboBox1.addItem(ob3[index][0]); // 添加默认选项 for (int i = 1; i [index].length; i++) { jComboBox1.addItem(ob3[index][i]); } return jComboBox1; } ``` 在这个例子...
cb.removeAllItems(); Object selected = ca.getSelectedItem(); Object[] newItems = ct.b(selected); for (int i = 0; i < newItems.length; i++) cb.addItem(newItems[i]); } }); ``` 5. **构建GUI并...
cityBox.removeAllItems(); cityBox.addItem("请选择"); if (cities != null) { for (String city : cities) { cityBox.addItem(city); } } } }); panel.add(provinceBox); panel.add(cityBox); frame....
combox_city.removeAllItems(); for(int j=0;j[i].length;j++) combox_city.addItem(this.cities[i][j]); } if(e.getSource()==button_add) { String aline=number+","+text_name.getText(); if(radio...