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Tag: java

replaceFirst , Why can’t special symbols be replaced?

replaceFirst , Why can’t special symbols be replaced? System.out.println(cal); // 1 * 1 + 1 <==== ??? Answer Special symbols which are used in the regular expressions need to be either escaped using or entire expression should be treated as a string literal with the help of Pattern.quote which basic…

How do I prevent a long overflow?

My assignment ask us to ask the user to enter a number and print the factorial of it, it also ask us to not allow the user to chose any negative number or number over 25, when they do, we loop them back to scanner to re renter a number we were also told to store the number in a

Java formatting GMT Date

I’m not finding a way to do edit GMT Date I receive “params.date” one string in this format “yyyyMMdd”, so this is my flow: output: And I need it: Can someone help me? Answer A few important points: Thu Nov 17 21:00:00 GMT-03:00 2022 is not equal to Thu Nov 17 21:00:00 GMT-00:00 …