jframewithid.java

来自「Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套」· Java 代码 · 共 16 行

// Figure 15.3
import javax.swing.JFrame;

/** This class is a version of JFrame that maintains its own ID number. */
public class JFrameWithID extends JFrame  {
	private static int totalJFrameCount = 0;
	private int ID;

	public JFrameWithID( String s )   {
		super(s + " -- #" + (totalJFrameCount+1));
		totalJFrameCount++;
		ID = totalJFrameCount;
	}
	
}