int [] a1 = new int[]{1,2,3};
int [] a2 = new int[]{1,2,3,4};
int [][] a3 = new int [][] {{1,2,3,4},{5,6,7,8}};
String [] s4 = new String[]{"s1","s2","s3",};
String [][] s5 = new String [][] {{"s1","s2","s3"},{"s4","s5","s6"}};
Object[] obj = s5; //这里为什么不对啊 ,听不懂 |