public class DWDemo {
public static void main(String args[]) throws java.io.IOException {
char ch;
do {
System.out.print("Press a key followed by ENTER: ");
ch = (char) System.in.read();
} while (ch != 'S');
}
}
尝试学习java。这是一个简单的功能,但我得到的结果是
Press a key followed by ENTER: D
Press a key followed by ENTER: Press a key followed by ENTER: G
Press a key followed by ENTER: Press a key followed by ENTER: E
Press a key followed by ENTER: Press a key followed by ENTER: F
Press a key followed by ENTER: Press a key followed by ENTER: S
系统将在Intellij中打印“按一个键然后按Enter:”两次,在eclipse中将打印三次。
请帮忙!
答案 0 :(得分:0)
因为你正在从控制台读取字符。每个“ENTER”=='\ n'都将被视为一个角色。所以你的
(char)System.in.read()
对于它读取的每个字符,取2个字符和循环会增加。对于“ENTER”。