View Compilation Error

0_0_23208015_25212\Main.java:10: 错误: BigInteger(long)可以在BigInteger中访问private
		catalans[1] = new BigInteger(1);
		              ^
0_0_23208015_25212\Main.java:12: 错误: BigInteger(long)可以在BigInteger中访问private
		BigInteger four = new BigInteger(4);
		                  ^
0_0_23208015_25212\Main.java:13: 错误: BigInteger(long)可以在BigInteger中访问private
		BigInteger two = new BigInteger(2);
		                 ^
0_0_23208015_25212\Main.java:14: 错误: BigInteger(long)可以在BigInteger中访问private
		BigInteger one = new BigInteger(1);
		                 ^
0_0_23208015_25212\Main.java:21: 错误: 找不到符号
			catalans[i] = catalans[i-1].multiply(four.multiply(BigInteger.valueOf(i)).subtract(two)).pide(BigInteger.valueOf(i+1));
			                                                                                        ^
  符号:   方法 pide(BigInteger)
  位置: 类 BigInteger
5 个错误