無論身份驗證失敗 - Java - Swing

Question

我已經嘗試了所有更改，但它顯示無效憑據。請解決這個問題。

它只是拒絕組合，我對此感到困惑。

這是一個邏輯錯誤。

我想在表格中添加用戶名到表格中。

我添加了所有的包並刪除了所有的異常，但不起作用。

import javax.swing.*; 
import java.awt.*; 
import java.awt.event.*; 
public class Authenticate extends JFrame implements ActionListener 
{ 
JLabel l1,l2,l3,l4,l5,l6,l7,l8; 
JPasswordField jp1,jp2; 
JComboBox c1,c2,c3; 
JTextField t1,t2,t3; 
JTextArea ta; 
JButton jb1,jb2; 
String[] day = new String[31]; 
String[] year = new String[40]; 
String[] month = new String[12]; 
public Authenticate() 
{ 
Container c = getContentPane(); 
c.setLayout(new FlowLayout(FlowLayout.CENTER)); 
l1 = new JLabel("Name"); 
l2 = new JLabel("E-mail ID"); 
l3 = new JLabel("Address"); 
l4 = new JLabel("User name"); 
l5 = new JLabel("Password"); 
l6 = new JLabel("Confirm Password"); 
l7 = new JLabel("DOB"); 
l8 = new JLabel(" "); 
jp1 = new JPasswordField(10); 
jp2 = new JPasswordField(10); 
jp1.setEchoChar('$'); 
jp2.setEchoChar('*'); 
t1 = new JTextField(10); 
t2 = new JTextField(10); 
t3 = new JTextField(10); 
ta = new JTextArea(3,15); 
jb1 = new JButton("Submit"); 
jb2 = new JButton("Reset"); 
for(int i=0;i<31;i++) 
{ 
day[i] = String.valueOf(i+1); 
} 
for(int i=0;i<35;i++) 
{ 
year[i] = String.valueOf(i+1980); 
} 
month[0] = "January"; 
month[1] = "February"; 
month[2] = "March"; 
month[3] = "April"; 
month[4] = "May"; 
month[5] = "June"; 
month[6] = "July"; 
month[7] = "August"; 
month[8] = "September"; 
month[9] = "October"; 
month[10] = "November"; 
month[11] = "December"; 
c1 = new JComboBox(day); 
c2 = new JComboBox(month); 
c3 = new JComboBox(year); 
jb1.addActionListener(this); 
jb2.addActionListener(this); 
c.add(l1); 
c.add(t1); 
c.add(l2); 
c.add(t2); 
c.add(l3); 
c.add(ta); 
c.add(l4); 
c.add(t3); 
c.add(l5); 
c.add(jp1); 
c.add(l6); 
c.add(jp2); 
c.add(l7); 
c.add(c1); 
c.add(c2); 
c.add(c3); 
c.add(jb1); 
c.add(jb2); 
c.add(l8); 
setSize(500,500); 
setVisible(true); 
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
} 

public void actionPerformed(ActionEvent ae) 
{ 
String s = ae.getActionCommand(); 
String s1,s2,s3; 
s1 = t3.getText(); 
s2 = jp1.getText(); 
s3 = jp2.getText(); 
if(s.equals("Submit")) //submit btn 
{ 
if(s1.equalsIgnoreCase("Ghiridhar") && s2.equals("Achiever") && s2==s3)  // right credentials 
l8.setText("Login Successful"); 
else 
{ 
l8.setText("Invalid Credentials"); 
t3.setText(" "); 
jp1.setText(""); 
jp2.setText(""); 

}  //else 

}  //inner if 
else // reset btn 
{ 
t1.setText(" "); 
t2.setText(" "); 
t3.setText(" "); 
ta.setText(" "); 
jp1.setText(""); 
jp2.setText(""); 
l8.setText(" "); 
}  //else 

}  // action fn 

public static void main(String a[]) 
{ 
Authenticate a1 = new Authenticate(); 
} 

} 

請在這方面提供幫助。

Answer 1

如果你想在S2和S3比較文本則應該是這樣的：

s2.equals(s3)

，而不是

s2==s3。

因爲字符串與equals()進行比較。

請按照其他人的建議縮進您的代碼