如何在JTextFrame中强制我的文本正确对齐？

Question

我试图让我的文本字段正确对齐，但我不太确定如何使它们在JTextField中正确对齐。我读到你可以使Jtextfield正确化，但我无法找到正确的语法。

目前，他们是合理的。

 import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;
 import javax.swing.border.TitledBorder;

public class RecursivePowerCalculator extends JFrame {
//text fields for base, exponent, and power. 
private JTextField jtfBase = new JTextField();
private JTextField jtfExponent = new JTextField();
private JTextField jtfPower = new JTextField();

//button to press called calcuate
private JButton jbtCalculate = new JButton("Calculate");

//constructor
public RecursivePowerCalculator(){
    jtfPower.setEditable(false);

    JPanel p1 = new JPanel(new GridLayout(3,2));

    p1.add(new JLabel("Base"));
    p1.add(jtfBase);

    p1.add(new JLabel("Exponent"));
    p1.add(jtfExponent);

    p1.add(new JLabel("Power"));
    p1.add(jtfPower);

    JPanel p2 =new JPanel(new FlowLayout(FlowLayout.CENTER));
    p2.add(jbtCalculate);

    //add the panels to the frame
    add(p1, BorderLayout.CENTER);
    add(p2, BorderLayout.SOUTH);

    jbtCalculate.addActionListener(new ButtonListener());
 }

private class ButtonListener implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e){
        //get values from text fields
        double base = Double.parseDouble(jtfBase.getText());
        double exponent = Double.parseDouble(jtfExponent.getText());

       String pNum = "" + (power(base, exponent));
        jtfPower.setText(pNum);
 }
    private double power(double x, double y){
     if ( y == 0)
         return 1.0;
     else
        return power(x,y - 1) * x;
        }
     }
 }

Answer 1

使用jtfPower.setHorizontalAlignment(JTextField.RIGHT); 请参阅javadoc。