小编Ans*_*nsh的帖子

考虑:

System.out.println(new String(new char[10]).replace("\0", "hello"));

有输出:

hellohellohellohellohellohellohellohellohellohello 

但:

System.out.println(new String(new char[10]).replace("", "hello")); 

有输出:

hello hello hello hello hello hello hello hello hello hello

这些额外空间来自哪里？