hw1 problem1

用inputline替代X用了String里的replace（）method；后来看陈同学的code发现可以用"+inputline+" 直接替代啊，之前都不造。还有URL好多method都不太明白什么意思，有好的学习API的方法吗，求分享。

code:

class OpenCommercial {

/** Prompts the user for the name X of a company (a single string), opens

* the Web site corresponding to www.X.com, and prints the first five lines

* of the Web page in reverse order.

* @param arg is not used.

* @exception Exception thrown if there are any problems parsing the

* user's input or opening the connection.

public static void main(String[] arg) throws Exception {

BufferedReader keyboard;

String inputLine;

keyboard = new BufferedReader(new InputStreamReader(System.in));

System.out.print("Please enter the name of a company (without spaces): ");

System.out.flush(); /* Make sure the line is printed immediately. */

inputLine = keyboard.readLine();

String originalWibeSite="http://www.x.com/";

String newWibeSite=originalWibeSite.replaceAll("x",inputLine);//replace x with inputline

URL x=new URL(newWibeSite);

InputStream ins=x.openStream();

InputStreamReader isr=new InputStreamReader(ins);

BufferedReader bfr=new BufferedReader(isr);

String lines[]=new String[5];

int i=0;

while(i<5){

lines[i]=bfr.readLine();

i++;}

int j=4;

while(j>=0){

System.out.println(lines[j]);

j--;

}

/* Replace this comment with your solution. */

}

output:

Please enter the name of a company (without spaces): moldirkorea

</script>

//-->

location.href = "./kr/";

<!--