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[英]How to print raw json object from file based off its ID Spring Boot
[英]How to identify an object off its id
我正在尝试制造战舰。
我有一个按钮,一旦单击,我希望被单击的按钮及其旁边的按钮都可以更改颜色。 (放在船上)
我为每个对象添加了一个ID,因此我有一个唯一的字符串来尝试识别按钮
您现在可以告诉我根据其ID标识一个对象,然后编辑该对象中的变量吗?
for(int x = 0; x < 10; x++)
{
for(int y = 0; y < 10; y++) {
myrectangle r2 = new myrectangle();
r2.id = Integer.toString(x)+Integer.toString(y);
r2.PosX = x;
r2.PosY = y;
r2.setX(30 * x);
r2.setY(30 * y);
r2.setWidth(30);
r2.setHeight(30);
r2.setY((y*30)+400);
r2.setFill(Color.GRAY);
r2.setStroke(Color.WHITE);
group.getChildren().add(r2);
r2.setOnMousePressed(event ->{
MouseButton Button = event.getButton();
r2.pressed = true;
if(Button == MouseButton.PRIMARY) { //left button
//make the ship go horizontally
int boatSize;
if(r2.ships == 8) {
boatSize = 5;
if((boatSize + r2.PosX) < 11)
{
// boat fits
r2.setFill(Color.RED);
r2.used = true;
}
//display aircraft horizontally(5 tiles)
}
else if(r2.ships == 7 || r2.ships == 6)
{
//display battleship horizontally(4 tiles)
}
else if(r2.ships == 5 || r2.ships == 4)
{
//display destoryer horizontally(3 tiles)
}
else if(r2.ships <= 3)
{
//display patrole boat horizontally(2 tiles)
}
}
if(Button == MouseButton.SECONDARY) { //right button
//make the ship go vertically
if(r2.ships == 8) {
//display aircraft vertically(5 tiles)
}
else if(r2.ships == 7 || r2.ships == 6)
{
//display battleship vertically(4 tiles)
}
else if(r2.ships == 5 || r2.ships == 4)
{
//display destoryer vertically(3 tiles)
}
else if(r2.ships <= 3)
{
//display patrole boat vertically(2 tiles)
}
}
});
if(r2.pressed == true) {
r2.setFill(Color.BLUE);
}
}
}
root.getChildren().add(group);
stage.show();
您可以使用事件对象的source
属性来获得单击的节点:
r2.setOnMousePressed(event -> {
mybutton clickedButton = (mybutton) event.getSource();
...
});
另一方面,您可以访问事件处理程序中的所有最终和有效的最终局部变量,如果您创建了它们的final
副本,则可以访问r2
甚至x
和y
:
for(int x = 0; x < 10; x++) {
final finalX = x;
for(int y = 0; y < 10; y++) {
final finalY = y;
...
r2.setOnMousePressed(event -> {
System.out.println("X = " + r2.x);
System.out.println("Y = " + finalY);
...
});
...
}
}
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