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Homework1
Program1
import java.net.*; import java.io.*; /** A class that provides a main function to read five lines of a commercial * Web page and print them in reverse order, given the name of a company. */ 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(); /* Replace this comment with your solution. */ URL u = new URL("http://www."+inputLine+".com"); InputStream ins=u.openStream(); InputStreamReader isr= new InputStreamReader(ins); BufferedReader bd = new BufferedReader(isr); String[] outprint=new String[5]; for (int j=4;j>=0;j--) { outprint[j]=bd.readLine()+"\r\n";//have nothing to do } for(int i=0;i<5;i++) { System.out.print(outprint[i]);//have no idea why I cannot use printIn } } }
println...小写L,不是大写i....
Program2 Nuke
import java.io.*; class OpenCommercial { public static void main(String[] arg) throws Exception { BufferedReader keyboard; String inputString; keyboard = new BufferedReader(new InputStreamReader(System.in)); System.out.print("Input A String: "); System.out.flush(); inputString = keyboard.readLine(); String former=new String(inputString.substring(0,1)); String latter=new String(inputString.substring(2,inputString.length())); System.out.print(former+latter); } }
Homework1
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