试试这个：
码：
public class AverageElements { private static double[][] array; public static void main (String[] args){ // Initialize array initializeArray(); // Calculate average System.out.println(getAverage()); } private static void initializeArray(){ array = new double[5][2]; array[0][0]=1.1; array[0][1]=12.3; array[1][0]=3.4; array[1][1]=5.8; array[2][0]=9.8; array[2][1]=5.7; array[3][0]=4.6; array[3][1]=7.45698; array[4][0]=1.22; array[4][1]=3.1478; } private static double getAverage(){ int counter=0; double sum = 0; for(int i=0;i<array.length;i++){ for(int j=0;j<array[i].length;j++){ sum = sum+array[i][j]; counter++; } } return sum / counter; }}输出：
5.452478000000001
