在Java中为char分配负值

Question

I want to assign a negative value to char in Java. Example: char a='-1' I tried the below example but an error occurs.

 char[] temp=new char[10];
    for(int i=0;i<10;i++)
    {
        if(condition met)
        temp[i]='-1';
    }

Answer 1

'-' and '1' are two separate char s, and they cannot be stored in a single char variable. Use a String instead. If you are using -1 as some sort of an exit case, use some alphabetical character instead like x .

Answer 2

You can do this, but char is 16-bit unsigned int so it will result in the char actually being 65535. See this answer for more info.

char a = (char)-1;
char b = (char)0;
System.out.println((int)a);
System.out.println((int)b);

Will result in output of:

65535                                                                                                                                                                                        
0