在Java中使用字符串末尾的3个字符

Minusing 3 characters from the end of a string in Java

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我有一个字符串ocustomerordernumber,我正在将值传递给icustomerordernumber。我想删除此ICustomerOrderNumber中的最后3个字符,但无法使其正常工作。我得到的错误是它不喜欢-。

代码:

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 oCustomerOrderNumber = iCustomerOrderNumber.trim() -  
 (iCustomerOrderNumber.length() -3);

例子。icustomerordernumber是1234567我希望ocustomerordernumber是1234。


For getting a portion of a string you can use substring method and
here you can define from where until where you want to fetch from any
String:

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iCustomerOrderNumber.substring(0, iCustomerOrderNumber.length()-3);


ocustomerordernumber=icustomerordernumber.substring(0,(icustomerordernumber.length()-3));