（JAVA）二进制位查看器

package Main; import java.awt.EventQueue; public class Main { public static void main(String[] args) { /** * Launch the application. */ EventQueue.invokeLater(new Runnable() { public void run() { try { test frame = new test("二进制位查看器"); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } } package Main; import java.awt.EventQueue; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.JButton; public class test extends JFrame { /** * */ private static final long serialVersionUID = 7483545163057953091L; private JPanel contentPane; private JTextField intField; private JTextField binaryField; /** * Create the frame. */ public test(String title) { super(title); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); setBounds(100, 100, 450, 300); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); this.setLocation(700, 380); JPanel panel = new JPanel(); panel.setBounds(0, 0, 434, 262); contentPane.add(panel); panel.setLayout(null); JLabel labelInt = new JLabel("请输入十进制整数："); labelInt.setFont(new Font("微软雅黑", Font.PLAIN, 12)); labelInt.setBounds(98, 69, 108, 27); panel.add(labelInt); intField = new JTextField(); intField.setBounds(216, 72, 130, 21); panel.add(intField); intField.setColumns(10); JLabel labelBinary = new JLabel("该整数的二进制为："); labelBinary.setFont(new Font("微软雅黑", Font.PLAIN, 12)); labelBinary.setBounds(97, 99, 108, 27); panel.add(labelBinary); binaryField = new JTextField(); binaryField.setColumns(10); binaryField.setBounds(216, 102, 130, 21); panel.add(binaryField); JButton Sure = new JButton("确定"); Sure.setFont(new Font("微软雅黑", Font.PLAIN, 12)); Sure.setBounds(182, 153, 93, 23); panel.add(Sure); Sure.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String numText = intField.getText(); try { int num = Integer.parseInt(numText);// String 转 int int[] a = new int[32]; int i; for (i = 1; i < 32; i++) a[i] = 0; a[0] = (num < 0) ? 1 : 0; num *= (num < 0) ? -1 : 1; boolean T = false; i = 31; while (!T) { a[i--] = num % 2; num /= 2; T = (num == 0) ? true : false; } int max = 0; for (i = 0; i < 32; i++) if (a[i] != 0) { max = i; break; } String arr = ""; for (i = max; i < 32; i++) arr += String.valueOf(a[i]);// int 转 String binaryField.setText(arr); } catch (NumberFormatException e1) { EventQueue.invokeLater(new Runnable() { public void run() { try { error frame = new error(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); intField.setText(""); } } }); } } package Main; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.JLabel; import java.awt.Font; public class error extends JFrame { /** * */ private static final long serialVersionUID = 6013400559790620619L; private JPanel contentPane; /** * Launch the application. */ /** * Create the frame. */ public error() { super("错误！"); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); setBounds(100, 100, 269, 114); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); setContentPane(contentPane); contentPane.setLayout(null); this.setLocation(800, 450); JPanel panel = new JPanel(); panel.setBounds(0, 0, 253, 146); contentPane.add(panel); panel.setLayout(null); JLabel label = new JLabel("请输入十进制整数！"); label.setFont(new Font("微软雅黑", Font.PLAIN, 12)); label.setBounds(71, 30, 108, 15); panel.add(label); } }