frm2.java

图书管理系统

package asd;

import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.Rectangle;
import javax.swing.JTextField;
import java.awt.Dimension;

public class Frm2 extends JFrame {

	private static final long serialVersionUID = 1L;

	private JPanel jContentPane = null;

	private JButton btn1 = null;

	private JTextField jTextField = null;

	/**
	 * This is the default constructor
	 */
	public Frm2() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(350, 300);
		this.setContentPane(getJContentPane());
		this.setTitle("JFrame");
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jContentPane = new JPanel();
			jContentPane.setLayout(null);//这必须改成NULL就是建立一个空白的JPanel这样子才可以在里面放控件而不出现下午的那种控件占全屏的现象
			jContentPane.add(getBtn1(), null);
			//明白了吗？？？
			jContentPane.add(getJTextField(), null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes btn1	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getBtn1() {
		if (btn1 == null) {
			btn1 = new JButton();
			btn1.setBounds(new Rectangle(111, 78, 64, 28));
			btn1.setText("胖子");
			btn1.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					//我们定义的那个俄按钮名字叫btn1所以这里就用旧是
					String n = btn1.getText();//由于我们取得是按钮的文本所以 用getText（）方法 这个方法不要参数  放回String类字符串所以我们要定义一格东西
					//来装这个值,这样就取道值了 明白了吗？？？
					//好我们把它放在文本框里面去
					
					//文本框我们没改名字
					
					jTextField.setText(n);//这一步明白吗
				}
			});
		}
		return btn1;
	}

	/**
	 * This method initializes jTextField	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField() {
		if (jTextField == null) {
			jTextField = new JTextField();
			jTextField.setBounds(new Rectangle(64, 30, 171, 26));
		}
		return jTextField;
	}

}