6.7echodemo.java

JAVA程序设计的源代码

public class EchoDemo
{
public static void main(String []args)throws java.io.IOException
{
int ch;
System.out.print("Enter some text: ");
while((ch=System.in.read())!='\n')    //循环从键盘读取一个字符直道按下回车
System.out.print((char)ch);    //打印输入的字符
}
}