使用 BlueJ 编写时出现错误未封闭字符文字":
Got the error "Unclosed Character Literal" , using BlueJ, when writing:
class abc
{
public static void main(String args[])
{
String y;
y = 'hello';
System.out.println(y);
}
}
但我不知道出了什么问题.有什么想法吗?
But I can't figure out what is wrong. Any idea?
谢谢.
在Java中,单引号只能取一个字符,必要时可以转义.字符串需要使用全引号,如下:
In Java, single quotes can only take one character, with escape if necessary. You need to use full quotation marks as follows for strings:
y = "hello";
你也用过
System.out.println(g);
我认为应该是
System.out.println(y);
注意:在制作 char
值时(您以后可能会使用它们),您需要单引号.例如:
Note: When making char
values (you'll likely use them later) you need single quotes. For example:
char foo='m';
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