calccanvas.java~1~

一个j2me写的手机计算器程序

package my.calc;

import com.nokia.mid.ui.FullCanvas;
import javax.microedition.lcdui.*;

public class CalcCanvas extends FullCanvas{
  /**退出按钮*/
  private Command cmdExit;
  /**标题*/
  private String title = "Calculator";
  /**字体*/
  private Font f;
  /**显示的数字*/
  private int result = 0;
  /**焦点编号*/
  private int num = 0;
  /**焦点图片的坐标*/
  private int x = 0;
  private int y = 0;

  /**默认构造方法*/
  public CalcCanvas() {}

  public void paint(Graphics g) {
    f = g.getFont();
    //绘制标题
    g.drawString(title,getWidth() / 2,f.getHeight() / 2,Graphics.TOP|Graphics.HCENTER);
    //绘制文本框
    g.drawRect(3,24,172,20);
    //绘制数字
    String temp = Integer.toString(result);
    g.drawString(temp,getWidth() - temp.length() / 2 - 3,30,Graphics.TOP|Graphics.RIGHT);
    //绘制面板

  }
}