Java开发问题

Why is casting double to char allowed in Java?(为什么在 Java 中允许将 double 转换为 char?)
How to represent the double quotes character (quot;) in regex?(如何在正则表达式中表示双引号字符(quot;)?)
Removing a character from an ArrayList of characters(从字符的 ArrayList 中删除一个字符)
Unclosed Character Literal error(未闭合字符文字错误)
Most efficient way to convert a single char to a CharSequence(将单个字符转换为 CharSequence 的最有效方法)
What exactly does ++array[s.charAt(i) - #39;A#39;] do?(++array[s.charAt(i) - A] 到底是做什么的?)
Why doesn#39;t a character increment in System.out.println()?(为什么 System.out.println() 中的字符不增加?)
How do you compare characters in java?(你如何比较java中的字符?)
selecting a random char in a string in java with a certain method(用某种方法在java中的字符串中选择一个随机字符)
Why can I add characters to strings but not characters to characters?(为什么我可以将字符添加到字符串但不能将字符添加到字符?)
To which character encoding (Unicode version) set does a char object correspond?(char 对象对应于哪个字符编码(Unicode 版本)集?)
Why is possible to concatenate Char and String in Java?(为什么可以在 Java 中连接 Char 和 String?)