Source of WriteMatrix2.java

Structures and functions

public class WriteMatrix2 

  1: 
  2: import java.io.*; 
  3: 
  4: public class WriteMatrix2 {
  5: 
  6:   static double[][] data = {
  7:     { Math.exp(2.0), Math.exp(3.0), Math.exp(4.0) }, 
  8:     { Math.exp(-2.0), Math.exp(-3.0), Math.exp(-4.0) }, 
  9:   };
 10:   
 11:   public static void main(String[] args) {
 12:     int row = data.length; 
 13:     int col = data[0].length; 
 14:     int i, j; 
 15:     for (i = 0; i < row; i++) {
 16:       for (j = 0; j < col; j++) {
 17:         System.out.println("data[" + i + "][" + j + "] = " + data[i][j]);  
 18:       }
 19:     }
 20:     
 21:     if (args.length > 0) {
 22:       try { 
 23:         DataOutputStream out = 
 24:             new DataOutputStream(new FileOutputStream(args[0])); 
 25:         out.writeInt(row); 
 26:         out.writeInt(col); 
 27:         for (i = 0; i < row; i++) {
 28:           for (j = 0; j < col; j++) {
 29:             out.writeDouble(data[i][j]); 
 30:           }
 31:         }
 32:         out.close(); 
 33:       } catch (IOException e) {}  
 34:     }
 35:   }
 36: }