关于字符串瓜分的_J2SE

关于字符串分割的
有一字符串"select * from test where id=1"我想把"test"和"where id=1"分出来，放到两个参数里面，要怎么分啊？

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Java code

        String sql = "select * from test where id = 1 and name = 77";        String[] s = sql.split(" from ")[1].split(" ", 2);        for (String a : s) {            System.out.println(a);        }
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探讨

sql.split(" from ")[1].split(" ", 2);
能不能解释一下啊？