frame1.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 Frame1 extends JFrame {

	private static final long serialVersionUID = 1L;

	private JPanel jContentPane = null;

	private JButton jButton = null;

	private JTextField jTextField = null;

	private JButton jButton1 = null;

	private JButton jButton2 = null;

	private JButton jButton3 = null;

	private JButton jButton4 = null;
	
	public int sum=0;

	private JButton jButton5 = null;

	/**
	 * This is the default constructor
	 */
	public Frame1() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(350, 200);
		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);
			jContentPane.add(getJButton(), null);
			jContentPane.add(getJTextField(), null);
			jContentPane.add(getJButton1(), null);
			jContentPane.add(getJButton2(), null);
			jContentPane.add(getJButton3(), null);
			jContentPane.add(getJButton4(), null);
			jContentPane.add(getJButton5(), null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes jButton	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton() {
		if (jButton == null) {
			jButton = new JButton();
			jButton.setBounds(new Rectangle(34, 78, 56, 27));
			jButton.setText("1");
			jButton.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					String n=jButton.getText();
					
					String Num=jTextField.getText()+n;
					jTextField.setText(Num);
				}
			});
		}
		return jButton;
	}

	/**
	 * This method initializes jTextField	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField() {
		if (jTextField == null) {
			jTextField = new JTextField();
			jTextField.setBounds(new Rectangle(32, 21, 285, 41));
		}
		return jTextField;
	}

	/**
	 * This method initializes jButton1	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton1() {
		if (jButton1 == null) {
			jButton1 = new JButton();
			jButton1.setBounds(new Rectangle(103, 79, 59, 24));
			jButton1.setText("2");
			jButton1.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					String n=jButton1.getText();
					
					String Num=jTextField.getText()+n;
					jTextField.setText(Num);
				}
			});
		}
		return jButton1;
	}

	/**
	 * This method initializes jButton2	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton2() {
		if (jButton2 == null) {
			jButton2 = new JButton();
			jButton2.setBounds(new Rectangle(178, 76, 54, 28));
			jButton2.setText("3");
			jButton2.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					String n=jButton2.getText();
					
					String Num=jTextField.getText()+n;
					jTextField.setText(Num);
				}
			});
		}
		return jButton2;
	}

	/**
	 * This method initializes jButton3	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton3() {
		if (jButton3 == null) {
			jButton3 = new JButton();
			jButton3.setBounds(new Rectangle(252, 74, 56, 30));
			jButton3.setText("+");
			jButton3.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					
					String n=jTextField.getText().toString().trim();
					
					if(n=="")
					{
						sum = sum +0;
					}
					else
					{
						sum = sum + Integer.parseInt(n);
					}
					jTextField.setText("");
				}
			});
		}
		return jButton3;
	}

	/**
	 * This method initializes jButton4	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton4() {
		if (jButton4 == null) {
			jButton4 = new JButton();
			jButton4.setBounds(new Rectangle(97, 119, 76, 30));
			jButton4.setText("=");
			jButton4.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					String n=jTextField.getText().toString().trim();
					
					if(n=="")
					{
						sum = sum +0;
					}
					else
					{
						sum = sum + Integer.parseInt(n);
					}
					jTextField.setText(""+sum);
					sum=0;
					
				}
			});
		}
		return jButton4;
	}

	/**
	 * This method initializes jButton5	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton5() {
		if (jButton5 == null) {
			jButton5 = new JButton();
			jButton5.setBounds(new Rectangle(204, 118, 70, 26));
			jButton5.setText("清空");
			jButton5.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					jTextField.setText("");
				}
			});
		}
		return jButton5;
	}

}  //  @jve:decl-index=0:visual-constraint="8,14"