Beginners JAVA GUI, every brother please jf. SetLayout (null), why don't show up blank.-CodePudding

 import javax.mail. Swing. JFrame; 
The import javax.mail. Swing. JLabel; 
The import javax.mail. Swing. JPanel; 

Import the Java. The awt. Dimension; 

The import javax.mail. Swing. JButton; 
The import javax.mail. Swing. JTextField; 
Public class Computor {
JButton b1=new JButton (" add ");//create a JButton objects 
JButton b2=new JButton (" subtraction "); 
JButton b3=new JButton (" reset all "); 
JLabel label1=new JLabel (" operand ");//create the tag 
JLabel label2=new JLabel (" operand 2 "); 
JLabel label3=new JLabel (" result "); 
JTextField txt1=new JTextField (20); 
JTextField txt2=new JTextField (20); 
JTextField txt3=new JTextField (20); 
JFrame jf=new JFrame (" simple calculator "); 
JPanel jp=new JPanel ();//create a JPanel object 
Public Computor () {
Jf. SetSize (300400); 
Jf. SetLayout (null); 
Jp. SetLayout (null); 

Jf. SetDefaultCloseOperation (JFrame. EXIT_ON_CLOSE); 
Jp. Add (b1); 
Jp. Add (b2); 
Jp. Add (b3); 
B1. SetBounds (60250,80,40); 
B2. SetBounds (160250,80,40); 
B3. SetBounds (90300120, 40); 
Jf. Add (jp); 
Jf. SetVisible (true); 
} 
//Settings window visible 
Public static void main (String args []) {
New Computor (); 
} 
}

CodePudding user response:

Remove the jf. SetLayout (null); This is the result you want?

CodePudding user response:

This I also tried, but then don't remove the layout is not random?