當擴展不工作時錨定

我用x和y軸創建了我自己的圖表。我發現目前的圖表選擇並不適合我的需求。我設法將我的圖表構建到了我的喜好中，現在我想將所有組件添加到擴展AnchorPane的對象中。最終結果是我的代碼編譯時沒有錯誤，沒有運行時錯誤，但是我沒有看到我創建的任何窗格。我想知道正確的程序是什麼擴展AnchorPane。當擴展不工作時錨定

這是我的類內擴展應用程序的代碼。工程就像一個魅力：

 Vector <String[]> v = new Vector<String[]>(); 
     double highest_high = 0; 
     double lowest_low = 0; 
     AnchorPane anchorpane = new AnchorPane(); 


     double xaxisHeight = 20; 
     double yaxisWidth = 60; 
     double chartYAdjustment = 40; 
     double barGap = 3; 
     double bars = 15; 
     final Chart chart = new Chart(v, yaxisWidth, xaxisHeight, highest_high, lowest_low, chartYAdjustment, barGap); 
     final YAxis yaxis = new YAxis(yaxisWidth, highest_high, lowest_low); 
     final XAxis xaxis = new XAxis(xaxisHeight, barGap, bars); 

     AnchorPane.setTopAnchor(yaxis, 0.0); 
     AnchorPane.setRightAnchor(yaxis, 0.0); 
     AnchorPane.setBottomAnchor(yaxis, 20.0);   


     AnchorPane.setLeftAnchor(xaxis, 0.0); 
     AnchorPane.setRightAnchor(xaxis, 60.0); 
     AnchorPane.setBottomAnchor(xaxis, 0.0);  

     AnchorPane.setLeftAnchor(chart, 0.0); 
     AnchorPane.setTopAnchor(chart, 0.0); 
     AnchorPane.setBottomAnchor(chart, 0.0); 
     AnchorPane.setRightAnchor(chart, 0.0); 

     anchorpane.getChildren().addAll(chart, yaxis, xaxis); 

     Scene s = new Scene(anchorpane, 800, 400, Color.BLACK); 
     stage.setScene(s); 
     stage.show();

當我把代碼擴展AnchorPane一個類中：

public class Main extends AnchorPane{ 

    public void Main(){ 
     Vector <String[]> v = new Vector<String[]>(); 
     double highest_high = 0; 
     double lowest_low = 0;  

     double xaxisHeight = 20; 
     double yaxisWidth = 60; 
     double chartYAdjustment = 40; 
     double barGap = 3; 
     double bars = 15; 
     final Chart chart = new Chart(v, yaxisWidth, xaxisHeight, highest_high, lowest_low, chartYAdjustment, barGap); 
     final YAxis yaxis = new YAxis(yaxisWidth, highest_high, lowest_low); 
     final XAxis xaxis = new XAxis(xaxisHeight, barGap, bars); 

     AnchorPane.setTopAnchor(yaxis, 0.0); 
     AnchorPane.setRightAnchor(yaxis, 0.0); 
     AnchorPane.setBottomAnchor(yaxis, 20.0);   


     AnchorPane.setLeftAnchor(xaxis, 0.0); 
     AnchorPane.setRightAnchor(xaxis, 60.0); 
     AnchorPane.setBottomAnchor(xaxis, 0.0);  

     AnchorPane.setLeftAnchor(chart, 0.0); 
     AnchorPane.setTopAnchor(chart, 0.0); 
     AnchorPane.setBottomAnchor(chart, 0.0); 
     AnchorPane.setRightAnchor(chart, 0.0); 

     getChildren().addAll(chart, yaxis, xaxis);

然後在我的類，它擴展應用，我有：

Main main = new Main(); 
Scene s = new Scene(main, 800, 400, Color.BLACK); 
      stage.setScene(s); 
      stage.show();

它只顯示一個黑色的窗口。

來源

2013-01-23 user1958884

找出我做錯了什麼。我在創建方法的構造函數調用中有「void」。

來源

2013-01-26 20:45:12 user1958884

當擴展不工作時錨定

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