?? showcolors.java
字號:
// ShowColors.java
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class ShowColors extends JFrame
{
public ShowColors()
{
super("Using colors");
setSize(400,130);
show();
}
public void paint ( Graphics g )
{
// set new drawing color using integers
g.setColor( new Color (255,0,0));
g.fillRect(25,25,100,20);
g.drawString("Current RGB: "+ g.getColor(), 130,40);
// set new drawing color using floats
g.setColor( new Color(0.0f, 1.0f, 0.0f));
g.fillRect(25,50,100,20);
g.drawString("Current RGB: "+ g.getColor(),130,65);
// set new drawing color using floats
g.setColor( Color.blue );
g.fillRect(25,75,100,20);
g.drawString("Current RGB: "+ g.getColor(),130,90);
//display individual RGB values
Color c = Color.magenta;
g.setColor( c );
g.fillRect(25,100,100,20);
g.drawString("RGB values: " + c.getRed() + "," + c.getGreen()+ "," + c.getBlue(), 130,115 );
}
public static void main ( String arg[])
{
ShowColors app = new ShowColors();
app.WindowiListener(new WindowAdapter() {public void windowClosing (WindowEvent e){System.exit(0);}});
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -