Java basics: 20th conversion between basic java types and strings

 

No matter what method is used, the data entered by the user is in the form of a string, but the input information may need to be used as a number or character during processing, in addition, no matter how the information is stored, it must be displayed as a string. Therefore, conversion between various data types and string types is required. First, the basic data type and String Conversions between type objects: Convert a string to another type: // The conversion between a string and its basic data type Int Is Representative // The followingCodeConverts a string to a number. String input = "111 "; Int I = integer. parseint (input );// Relatively common Int I2 = new INTEGER (input). intvalue (); Int I3 = integer. valueof (input ); Int I4 = new INTEGER (input ); // The following code converts a number to a string String out = new INTEGER (I). tostring (); String out2 = string. valueof (I ); You can use Tostring () Method, all objects have Tostring () Method. If this method does not meet the requirements, you can implement it again. 【 Note: ] An exception may occur when converting a string to a number, so you need to handle the exception. Last time:19th string usage (lower) Next time:21st formatting of numbers Li xucheng csdn blog : Http://blog.csdn.net/javaeeteacher Invite you as a friend:Http://student.csdn.net/invite.php? U= 124362 & C = 7be8ba2b6f3b6cc5