Java gives you the ability to dynamically create strings. Even after you set the string value, you can add more characters to the string value throughout the code. This process lets you build a string ...

使用字符时，我们通常使用的是内置数据类型char。 然而，在实际开发过程中，我们经常会遇到需要使用对象，而不是内置数据类型的情况。为了解决这个问题，Java语言为内置数据类型char提供了包装类Character类。 Character类提供了一系列方法来操纵字符。你可以 ...

Though Java already has a character type and char keyword to represent and manipulate characters, the language also requires a Character class for two reasons: Character c1 = new Character ('A'); ...

A few years ago I wrote a Soduko solver in Java. Works great, except I have to edit the source file to change the input because I could never get Swing to work like my mental model said it should. Cut ...

I'm working up a new project for my High School CompSci students. In honor of the centenary of the sinking of the Titanic, I'm having them program a text -> Morse Code generator, and have them output ...

The String.split methods can be very convenient for easily splitting a provided String based on a provided regular expression String. The only trick is figuring out a regular expression token to use ...