calculatorlayout.java

CopyLines,java应用小程序

package guiComponentPackage;
import java.awt.*;
public class CalculatorLayout {
	public static void main(String[] args) {
		Label lab=new Label("0.0",Label.RIGHT);
		Buffer buffer=new Buffer();
		int i=0;
		String[] oprator={".","CE","+","计","-","算","*","器","/","="};
		Button[] btn=new Button[20];
		for( i=0;i<=9;i++) {
			btn[i]=new Button(Integer.toString(9-i));
			btn[i].addActionListener(new ButtonEventHandler(buffer,lab));
		}
		for (i=10;i<=19;i++) {
		  btn[i]=new Button(oprator[i-10]);
		  btn[i].addActionListener(new ButtonEventHandler(buffer,lab));
		}
		Frame frm =new Frame("Calculator Layout");
		frm.setLayout(null);                       //不使用布局管理器
		frm.setBounds(0,0,300,260);
		frm.addWindowListener(new EventHandleWithAdaptor());
		lab.setBounds(0, 20, 298, 38);
		lab.setBackground(new Color(195,185,195));
		Panel numPnl =new Panel(new GridLayout(4,3));
		Panel opPnl =new Panel(new GridLayout(4,1));
		numPnl.setBounds(0,57,210,200);
		opPnl.setBounds(210,57,90,200);
		for(int j=0;j<12;j++) {
		    numPnl.add(btn[j]);
		}
		for(int j=0;j<8;j++) {
		    opPnl.add(btn[j+12]);
		}
		frm.add(lab);
		frm.add(numPnl);
		frm.add(opPnl);
		frm.setResizable(false);
		frm.setVisible(true);
	}                                                                   
}