我正试图让定时器触发一个我每秒钟调用UpdateTask的TimerTask。但是,eclipse声明我在该行上有语法错误:
“计时器。计划(新的UpdateTask(),10);”
我已经为eclipse声明语法错误的特定标记加了大气。我不明白我在这里缺少什么。
import java.awt.Graphics;
import java.util.Timer;
import java.util.TimerTask;
public class graphpanel extends variables
{
Timer timer = new Timer();
timer.schedule(new UpdateTask(), 10);
int ypoint;
int barheight;
int height = getHeight();
int width = getWidth();
int bars = (int)getLife() - (int)getAge();
int xpoint = 0;
int barwidth = 20;
public void paintComponent (Graphics g)
{
super.paintComponent(g);
for (int i = 0; i < bars; i++)
{
barheight = (int) getTime(i)/100;
ypoint = height/2 - barheight;
g.drawRect(xpoint, ypoint, barwidth, barheight);
}
}
class UpdateTask extends TimerTask
{
public void run()
{
bars = (int)getLife() - (int)getAge();
repaint();
}
}
}
答案 0 :(得分:3)
这一行
timer.schedule(new UpdateTask(), 10);
不是声明,因此需要在方法,构造函数,静态初始化程序或实例初始化程序中。