Design a GUI application to accept the side of a square in a text fiel

1.	Design a GUI application to accept the side of a square in a text field and calculate the area and perimeter of the square. Add Refresh button to clear all text fields and a Stop button to end the application. Area of a square = side * side and perimeter = 2(side +side)
Answer» //Coding for jButton1 (“Calculate the area” button) private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { double a,b; a=Double.parseDouble(jTextField1.getText()); b=aa; jTextField2.setText(Double.toString(b)); } //Coding for jButton2 (“Calculate the perimeter” button)* private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { doublea,c; a=Double.parseDouble(jTextField1.getText()); c=4a; jTextField3.setText(Double.toString(c)); } //Coding for jButton4 (“Refresh” button)* private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) { jTextField1.setText(" ");jTextField2.setText(" ");jTextField3.setText(" "); } //Coding for jButton5 (“stop” button) private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) { System.exit(0); }

Design a GUI application to accept the side of a square in a text field and calculate the area and perimeter of the square. Add Refresh button to clear all text fields and a Stop button to end the application. Area of a square = side * side and perimeter = 2(side +side)

Answer»

//Coding for jButton1 (“Calculate the area” button)

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)

{

double a,b;

a=Double.parseDouble(jTextField1.getText());

b=a*a; jTextField2.setText(Double.toString(b));

}

//Coding for jButton2 (“Calculate the perimeter” button)

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt)

{

doublea,c;

a=Double.parseDouble(jTextField1.getText());

c=4*a; jTextField3.setText(Double.toString(c));

}

//Coding for jButton4 (“Refresh” button)

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt)

{

jTextField1.setText(" ");jTextField2.setText(" ");jTextField3.setText(" ");

}

//Coding for jButton5 (“stop” button)

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt)

{

System.exit(0);

}