读取二维ArrayList中的元素

package cn.edu.hpu.hlj;


import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Random;


public class test {
public static void main(String[] args) throws IOException {
int a[] = { 7010, 7020 };
int b[] = { 7510, 7520 };
int c[] = { 8505, 8510 };
ArrayList<int[]> list = new ArrayList<int[]>();
list.add(a);
list.add(b);
list.add(c);
// 转为二维数组
int arryTwo[][] = (int[][]) list.toArray(new int[0][0]);
// 测试
for (int i = 0; i < arryTwo.length; i++) {
System.out.print("===>" + i);
for (int j = 0; j < arryTwo[i].length; j++) {
System.out.print("\t" + arryTwo[i][j]);
}
System.out.println();
}
}


}