是否可以基于 if 语句进行循环？

Question

如果用户在输入输入后单击“否”，我将尝试让我的代码循环。import java.awt.event.WindowAdapter;import javax.swing.JFrame;import javax.swing.JOptionPane;    public class Sizer extends WindowAdapter     {            public static void main (String[]args){            JFrame m = new JFrame();            JOptionPane.showMessageDialog(m,"Ok To set the window size you are going to type in the number for each value REMEMBER THE SIZE IS IN PIXELS");            String input1= JOptionPane.showInputDialog("Height (suggested under 1080 and above 300)");            int Height= Integer.parseInt( input1);在此输入之后，我必须确认该用户是否正确输入了它，如果他们单击“是”，它会继续运行，如果他们单击“否”，它会退出我希望它让用户再次输入它，我该怎么做？        int a1 = JOptionPane.showConfirmDialog(m,"Are you sure that this is the correct Height"+ Height);        if (a1==JOptionPane.YES_OPTION){        if (a1==JOptionPane.NO_OPTION){        }        String input2= JOptionPane.showInputDialog("Width (suggested under 1920 and above 300)");        int Width = Integer.parseInt( input2);        JFrame frame = new JFrame();                            Slop comp = new Slop();        frame.add(comp);        frame.setSize(Height,Width);        frame.setTitle("Slop of a Line");        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        frame.setVisible(true);                }           }}