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我嘗試創建網格表的按鈕組件我已經添加到JPanel的,當我運行一個應用程序
package midterm
import java.awt.BorderLayout
import java.awt.Color
import java.awt.GridLayout
import javax.swing.JButton
import javax.swing.JPanel;
import scala.swing.Button
import scala.swing.MainFrame
import scala.swing.SimpleSwingApplication
object Main extends SimpleSwingApplication {
def top = new MainFrame {
title = "Hello, World!"
val panel = new JPanel()
var btn = Array.ofDim[JButton](8,8)
//contents =new JButton()
for(i<-0 to 7){
for(j<-0 to 7){
btn(i)(j)= new JButton("vsdf")
btn(i)(j).setBounds(i*80,j*80,80,80)
btn(i)(j).setBackground(Color.BLUE)
panel.add(btn(i)(j))
}
}
}
}
編譯是好的,但在輸出只有框架沒有按鍵,這一切都不會出現。請告訴我我的錯誤!