看图吧，Java

Question

package salary;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.text.NumberFormat;


public class Salary extends JFrame{
	//声明标签
	private JLabel numl;
	private JLabel basel;
	private JLabel salel;
	//声明文本框
	private JTextField numf;
	private JTextField basef;
	private JTextField salef;
	//声明滚动条
	private TextArea sumt;
	//声明按钮
	private JButton btnsure;
	private JButton btnclean;
	private JButton btnout;
	//构造方法------------------------------------------------------------------	
		public Salary(){
			q();
			w();
			r();
			setSize(300, 400);
			setTitle("工资发放程序");
			setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			pack();
		}
	//实例化组件----------------------------------------------------------------------
		private void q(){
			numl=new JLabel("编号");
			basel=new JLabel("基本工资");
			salel=new JLabel("销售额");
			
			numf=new JTextField();
			numf.setColumns(10);
			basef=new JTextField();
			basef.setColumns(10);
			salef=new JTextField();
			salef.setColumns(10);
			
			sumt = new TextArea();
			sumt.setColumns(30);
			
			btnsure=new JButton("工资计算");
			btnclean=new JButton("清除输入");
			btnout=new JButton("清除显示框内容");
		}
		//布局-----------------------------------------------------------------------
		private void w(){
			Container a = getContentPane();
			//存放标签
			JPanel panel1 = new JPanel(new GridLayout(3, 1));
			panel1.add(numl);
			panel1.add(basel);
			panel1.add(salel);
			//存放文本框
			JPanel panel2 = new JPanel(new GridLayout(3, 1));
			panel2.add(numf,new FlowLayout(FlowLayout.LEFT,10,10));
			panel2.add(basef,new FlowLayout(FlowLayout.LEFT,10,10));
			panel2.add(salef,new FlowLayout(FlowLayout.LEFT,10,10));
			//存放文本框与标签
			JPanel panel3=new JPanel(new BorderLayout());
			panel3.setBorder(BorderFactory.createEmptyBorder(10, 10, 5, 10));
			panel3.add(panel1,BorderLayout.LINE_START);	//西
			panel3.add(panel2,BorderLayout.LINE_END);	//东
			//存放按钮
			JPanel panelBtn= new JPanel(new FlowLayout(FlowLayout.CENTER,20,20));
			panelBtn.add(btnsure);
			panelBtn.add(btnclean);
			//面板——1
			JPanel panel=new JPanel(new BorderLayout());
			panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 5, 10));
			panel.add(panel3,BorderLayout.PAGE_START);	//北
			panel.add(panelBtn,BorderLayout.CENTER);
			panel.add(btnout,BorderLayout.PAGE_END);	//南
			//总面板
			JPanel pan=new JPanel(new BorderLayout());
			pan.setBorder(BorderFactory.createEmptyBorder(10, 10, 5, 10));
			pan.add(panel,BorderLayout.CENTER);
			pan.add(sumt,BorderLayout.LINE_END);
			//	
			a.add(pan);
		}
//--------------------------------------------------------------------------------------
	private String t(){
		double sum,s,b;
	
		s=Double.parseDouble(salef.getText());
		b=Double.parseDouble(basef.getText());
		if(s>=30.0 && s<=299.99)
			sum=s*0.05+b;
		
		else if(s>=300.0 && s<=999.9)
			sum=s*0.1+b;
		
		else if(s>=1000.0)
			sum=s*0.15+b;
		else
			sum=b;	
		String out="";
		out +=String.format("%s\t%.1f\t%.1f\t%.1f\n", numf.getText(),b,s,sum);
		return out;
	}
//----------------------------------------------------------------------------------		
		private class btnsure implements ActionListener {
			public void actionPerformed(ActionEvent e) {				 
						String s="编号 \t"+"基本工资 \t"+"销售额 \t"+"工资 \n";	
						String s1 =s+sumt.getText();
						s1 +=t();
						sumt.setText(s1);
			}
		}
//---------------------------------------------------------------------------------------		
		private class btnclean implements ActionListener {
			public void actionPerformed(ActionEvent e) {				 
					numf.setText("");
					basef.setText("");
					salef.setText("");
			}
		}
//---------------------------------------------------------------------------------------		
		private class btnout implements ActionListener {
			public void actionPerformed(ActionEvent e) {				 
				 	sumt.setText("");		 
			}
		}
//---------------------------------------------------------------------------------------		
		private void r() {
			btnsure h1 = new btnsure();
			  btnsure.addActionListener(h1);
			btnclean h2=new btnclean();
			  btnclean.addActionListener(h2);
			btnout h3 = new btnout();
			  btnout.addActionListener(h3);
		}
		
		public static void main(String[] args) {
			JFrame.setDefaultLookAndFeelDecorated(true); // 窗体装饰
			Salary frame = new Salary();
			frame.setVisible(true);	
		}
}

Answer 1

这是炫耀还是什么，哈哈~