You ran into multiple problems here. Problem 1 : Look carefully your ; ends your switch there right away. Apparently all your case statements became orphans 🙂 Problem 2 : Your Switch should be switch(lower case s) Problem 3 : One more ; cause you compile time error at the line Note: I strongly suggest you to use an IDE, to save lot of time here. It … Read more
You need to use return value of replaceAll() method. replaceAll() does not replace the characters in the current string, it returns a new string with replacement. String objects are immutable, their values cannot be changed after they are created. You may use replace() instead of replaceAll() if you don’t need regex. outputs
It’s simply too big for an int (which is 4 bytes and signed). Use
Here you can use my method for generating Random String The above method from my bag using to generate a salt string for login purpose.
Wow, a lot of big OOP terms being thrown around to this guy. Being one who started in procedural programming and is now mostly doing OOP, this is conceptually how I think of the difference (without all the big terms): In C, you have things called structs that can hold state. They kind of seem … Read more
The method you want is BigInteger#valueOf(long val). E.g., Making a String first is unnecessary and undesired.
Since the methods are deprecated, you can do this with Calendar: And if you need a Date object in the end, simply call today.getTime()
The toString is supposed to return a String. I suggest you make use of your IDE’s features to generate the toString method. Don’t hand-code it. For instance, Eclipse can do so if you simply right-click on the source code and select Source > Generate toString
After ~7 year, I will update it to better approach which is suggested by Bozho.
Use BitSet (as Hunter McMillen already pointed out in a comment). You can easily get and set bits. To iterate just use a normal for loop.