摘要：public class test1_format { public static void main(String[] args) { BigDecimal decimal = new BigDecimal("1.12345"); System.out.println(decimal); BigD 阅读全文

摘要：Caused by: java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.sock 阅读全文

摘要：public static void main(String[] args) { System.out.println(new BigDecimal(10).negate()); System.out.println(new BigDecimal(-3).negate()); System.out. 阅读全文