input.java

JSP方面的实例程序

package com.cargo.filter;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: MR</p>
 * @author BWM
 * @version 1.0
 */

public class Input {

    private boolean bln = true;

    public Input() {
    }

    public boolean isEmpty(String str) {
        if (str == null || str.trim().length() <= 0) {
            return bln;
        }
        return!bln;
    }

    public boolean isEmpty(int i) {
        if (i <= 0) {
            return bln;
        }
        return!bln;
    }

    public boolean isEmpty(float i) {
        if (i <= 0) {
            return bln;
        }
        return!bln;
    }

    public boolean isNum(String str) {
        if (str != null && str.length() > 0) {
            for (int i = 0; i < str.length(); i++) {
                if (str.charAt(i) < 48 || str.charAt(i) > 57) {
                    return false;
                }
            }
            return true;
        }
        return false;
    }

}