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1. I have some question regarding inserting two panels from a class to a JFrame from another class, both having same package of GUI. How to do this? 2.And how to make JFrame to display different panels during application run? Example, I have a JButton in class A which after … 
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I'm a student who currently studying database systems, so I have some doubts on designing a database system. I'm currently designing a car wash center database, which has a manager and car washers 1. When I am developing an ER diagram, am I going to include a box with "Center" … 
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[CODE]Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim r, d As Double Const Pi = 3.141596 r = Val(rtb.Text) d = Val(dtb.Text) If 0 < d < 360 Then r = d / 180 * Pi rtb.Text = Format(r, "0.00") dtb.Text = Format(d, "0.00") ElseIf …
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