数组常量只能在初始化器中尝试初始化数组时使用？

Question

考虑以下几点：

public class Actions 
{ 


    private MyMatrix matrix_1; 
    private MyMatrix matrix_2; 
    private MyMatrix transformMatrix; 
    private final int VW = 40; 
    private final int VH = 40; 

    public static double[][] translateMatrixArr; 


    public Edge doTransofrm(double xPoint,double yPoint,Edge myEdge,int transformType) 
    { 
     switch(transformType) 
     { 
     case 1: 
      // initializations 
      Actions.translateMatrixArr = {{1.,0.,xPoint},{0.,1.,yPoint},{0.,0.,1.}}; 
      break; 
     case 2: 
      Actions.translateMatrixArr = // something else 
      break; 
     case 3: 
      Actions.translateMatrixArr = // something else 

     } 

     return null; 
    } 


... 


} 

我试图做的像什么@joschi说here，但它不工作。任何方式在这个？

问候

Answer 1

您需要使用new创建数组的实例：

Actions.translateMatrixArr = new double[][]{ 
    new double[] {1.,0.,xPoint} 
, new double[] {0.,1.,yPoint} 
, new double[] {0.,0.,1.} 
};