我正在尝试使用Jbutton将数组中的元素更改为单词“empty”,如果数组中所选位置的空白,则还要通过Jtextfield添加名称。出于某种原因,我无法让它发挥作用。这里的代码不知道我是否遗漏了什么或者我完全错了
move = new JButton("Add Tennant");
window.add(move);
moveIn.addActionListener(this);
Tennant = new JTextField(FIELD_WIDTH);
nTennant.setText("Enter new name") ;
window.add(Tennant);
Tennant.addActionListener(this);
evict = new JButton("Evict");
window.add(evict);
moveIn.addActionListener(this);
不同的方法:
if(e.getSource() == move)
{
if (occupant[selectedApartment].equals("empty"))
{
occupant[selectedApartment] = Tennant.getText();
}
}
if(e.getSource() == evict)
{
if(!occupant[selectedApartment].equals("Empty"))
{
occupant[selectedApartment] = "Empty";
}
}
答案 0 :(得分:0)
向我跳出的第一件事是您使用occupant[selectedApartment] = "Empty";
将公寓设置为空,但使用if (occupant[selectedApartment].equals("empty"))
来测试公寓是否为空
"Empty" != "empty"
你可以改变
if (occupant[selectedApartment].equals("empty"))
到
if (occupant[selectedApartment].equals("Empty"))
或使用
if (occupant[selectedApartment].equalsIgnoreCase("empty"))
或更改
occupant[selectedApartment] = "Empty";
到
occupant[selectedApartment] = "empty";