hello.java

《Java实例入门》所有实例的源代码。所有的源文件都是.java文件

package firstPackage;
import  java.lang.*;
import java.io.*;

public class Hello{
  public String personName;
  public void Hello(){};
  public String readname() {
     int ch;
     String name = "";
     boolean ok = false;
     System.out.println("Please enter your name:");
     while (!ok){
        try{
            //从屏幕上读取一个字节的信息
           ch = System.in.read();
           if (ch < 0 || (char)ch == '\n')
               ok = true;
           else if ((char)ch != '\r')
               name = name + (char)ch;
        }catch(IOException e){
          ok = true;
        }
     }
     personName=name;
     return name;
  }
  public static void main(String[] args){
     String name;
     //生成一个Hello类的实例
     Hello myfirst = new Hello();
     //从屏幕上读取一行信息直到键入回车键为止
     name=myfirst.readname();
     System.out.println("Welcome to the Java World，"
 + name + ".");
     System.out.println("And may you success.");
  }
}