随机数的运算

package newpac;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class Count {

/**
 * @param args
 */
public static void main(String[] args) {
    // TODO Auto-generated method stub
    int num1,num2,count=0,a,b;
    String aStr;
    
    final int LOW_BOUND=0;
    final int UP_BOUND=9;
    
    
    
    aStr=JOptionPane.showInputDialog("你想做几题数学题：");
    a=Integer.parseInt(aStr);
    
    
    
    for(int i=0;i

}