如何从 if 语句运行 Java Applet?
How to run the Java Applet form an if statement?
在我的代码中,我想让方法 paintComponent1(画一条线)根据按键是否被按下来运行。我该怎么做?感谢所有帮助,谢谢:D!
这是我的代码:
import java.awt.event.KeyEvent;
import java.awt.*;
import java.applet.Applet;
public class Test {
boolean x = false;
public void paintComponent1(Graphics g){
g.drawLine(35, 60, 100, 120);
}
public void keyPressed(KeyEvent e) {
x = true;
}
public void keyReleased(KeyEvent e) {
x = false;
}
public void paintComponent(Graphics g) {
if (x)
paintComponent1();
}
}
为什么不直接将 paintComponent1() 移动到 keyPressed 方法中?
public void keyPressed(KeyEvent e)
{
if(e.getKeyCode() == KeyEvent.VK_SPACE) // if you press the space bar key
{
paintComponent1();
}
}
在我的代码中,我想让方法 paintComponent1(画一条线)根据按键是否被按下来运行。我该怎么做?感谢所有帮助,谢谢:D!
这是我的代码:
import java.awt.event.KeyEvent;
import java.awt.*;
import java.applet.Applet;
public class Test {
boolean x = false;
public void paintComponent1(Graphics g){
g.drawLine(35, 60, 100, 120);
}
public void keyPressed(KeyEvent e) {
x = true;
}
public void keyReleased(KeyEvent e) {
x = false;
}
public void paintComponent(Graphics g) {
if (x)
paintComponent1();
}
}
为什么不直接将 paintComponent1() 移动到 keyPressed 方法中?
public void keyPressed(KeyEvent e)
{
if(e.getKeyCode() == KeyEvent.VK_SPACE) // if you press the space bar key
{
paintComponent1();
}
}