stringuse.java

java的一些小型程序代码

/*
 * Created on 2007/03/23
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import java.io.BufferedReader;
import java.io.InputStreamReader;
/**
 * @author BFJ1
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class Stringuse {

	public static void main(String[] args)
	{
		String s,ex,fornum;int len;double num;
		s=new String("");
		ex=new String("Gibson");
		try
		{
			System.out.println("Input your String:");
			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
			s=in.readLine();
		}
		catch(Exception e)
		{
			System.out.println("Input Error!");
		}
		len=s.length();
		System.out.println(len);
		System.out.println("compare answer:"+s.equals(ex));
		try{
		num=Double.parseDouble(s);
		System.out.println(num);
		}
		catch(Exception e){
			System.out.println("Can't change s to double type.");
		}
		System.out.println("--------------------------");
		try
		{
			System.out.println("Input your doubletype number:");
			BufferedReader newin = new BufferedReader(new InputStreamReader(System.in));
			num=Double.parseDouble(newin.readLine());
			fornum=String.valueOf(num);
			System.out.println(fornum.toString());
			System.out.println("search for num1:"+fornum.indexOf("1"));
		}
		catch(Exception e)
		{
			System.out.println("Input Error.");
		}
		
	}
}