java输入数字，将其存入数组

java输入数字，将其存入数组

用StringTokenizer这个类比较简单
import java.io.*;
import java.util.*;
public class inputNumIntoArray
{
int numbers[]=new int[20];
int num;

public static void main(String []args)
{
inputNumIntoArray getnum=new inputNumIntoArray();
String line=new String();
DataInputStream read=new DataInputStream(System.in);
try
{
line=read.readLine();
}
catch(IOException ex)
{
System.out.println(ex.toString());
}
for(int i=0;i<line.length();i++)
if(line.charAt(i)<'1'||line.charAt(i)>'9')
{
System.out.println("ERROR!CONTAITN OTHER CHAR!");
return;
}
getnum.getInteger(line);

getnum.output();
}
void getInteger(String line)
{
line=line.trim();
StringTokenizer tokens=new StringTokenizer(line," ");//用空格分割字符口串
int i,n=tokens.countTokens();//获得数字的个数
i=0;
numbers=new int[n];//确定元素的个数
num=n;
while(tokens.hasMoreTokens())
{
numbers[i]=Integer.parseInt(tokens.nextToken());//将字符转换成数字
i++;
}
}
void output()
{
for(int i=0;i<num;i++)
{
System.out.println("numbers["+i+"]="+numbers[i]);
}
}
}2007-12-20