作如下修改 即可import javax.swing.JOptionPane;public class test01 { public static void main(String sgs[]) {String num = JOptionPane.showInputDialog("请输入要转换的数字:");int number = Integer.parseInt(num);System.out.println("该数的二进制数值为:");int sum;String result = "";for (int i = number; i >= 1; i /= 2) { if (i % 2 == 0) {
sum = 0; } else {
sum = 1; } result = sum + result;}System.out.print(result); }}