用java语言编写题目 试求二次方程的根，用循环方法能实现重复输入系统的值a,b,c.

/**
* @author Cx
* @date Feb 26, 2009
*
*/
public class Quadratic {

private double a, b, c;

private double x, x1, x2;

private StringBuffer sb;

public static void main(String[] args) {
while(true){
System.out.println("Please input values of a, b, c:");
Quadratic q = new Quadratic();
q.format();
q.calc();
System.out.println("--------------------------------");
}
}

public Quadratic(){
java.util.Scanner scan = new java.util.Scanner(System.in);
System.out.print("a = ");
a = scan.nextInt();
System.out.print("b = ");
b = scan.nextInt();
System.out.print("c = ");
c = scan.nextInt();
}

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