java计算器界面

计算器界面

public class Calculator {
    
    
        // 计算器界面布局
	
		JFrame f ;
        JTextField jtf;
        JButton[] jbs ;
		JButton clear;
		
		public   Calculator() {
    
    
			
		f = new JFrame("计算器V1.1");
		jtf = new JTextField(15);
		clear = new JButton("清空");
		jbs = new JButton[16];	
		String str ="123+456-789*0.=/";
	
			for (int i = 0; i < jbs.length; i++)
			{
    
    
				jbs[i] = new JButton(str.charAt(i)+"");
			}
	
			
			init();
			f.setSize(300,400);
		    f.setVisible(true);
		}
	

	public void init() {
    
    
		f.setLayout(new BorderLayout());
		
		JPanel panel = new  JPanel();
		
		JPanel panel2 = new JPanel();
		
		
		panel.setLayout(new FlowLayout());
		panel.add(jtf);
		panel.add(clear);
		
		panel2.setLayout(new GridLayout(4,4));
		
		for (int i = 0; i < jbs.length; i++) {
    
    
			
			panel2.add(jbs[i]);
		}
		f.add(panel,BorderLayout.NORTH);
		f.add(panel2,BorderLayout.CENTER);
		
		
	}
	public static void main(String[] args) {
    
    
		 Calculator c = new  Calculator();
	}
	}