Question

java中有没有这样的控件，带两个箭头，点击向上箭头数字增加，点击向下的数字减小？？？

Answer 1

这个叫微调控件，这里有一个例子。
/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly
*/
// SwingSpinnerTest.java
//A quick test of various spinners.
//

import java.awt.Container;
import java.awt.GridLayout;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.SpinnerDateModel;
import javax.swing.SpinnerListModel;
import javax.swing.SpinnerNumberModel;

public class SwingSpinnerTest extends JFrame {

public SwingSpinnerTest() {
super("JSpinner Test");
setSize(300, 180);
setDefaultCloseOperation(EXIT_ON_CLOSE);

Container c = getContentPane();
c.setLayout(new GridLayout(0, 2));

c.add(new JLabel(" Basic Spinner"));
c.add(new JSpinner());

c.add(new JLabel(" Date Spinner"));
c.add(new JSpinner(new SpinnerDateModel()));

String weekdays[] = new String[] { "Sunday", "Monday", "Tuesday",
"Wednesday", "Thursday", "Friday", "Saturday" };
c.add(new JLabel(" List Spinner"));
c.add(new JSpinner(new SpinnerListModel(weekdays)));

c.add(new JLabel(" Number Spinner"));
c.add(new JSpinner(new SpinnerNumberModel(0, 0, 100, 5)));

c.add(new JLabel(" Rollover List Spinner"));
c.add(new JSpinner(new RolloverSpinnerListModel(weekdays)));

setVisible(true);
}

public static void main(String args[]) {
new SwingSpinnerTest();
}
}

class RolloverSpinnerListModel extends SpinnerListModel {

public RolloverSpinnerListModel(Object[] items) {
super(items);
}

public RolloverSpinnerListModel(List items) {
super(items);
}

public Object getNextValue() {
Object nv = super.getNextValue();
if (nv != null) {
return nv;
}
return getList().get(0);
}

public Object getPreviousValue() {
Object pv = super.getPreviousValue();
if (pv != null) {
return pv;
}
List l = getList();
return l.get(l.size() - 1);
}
}

追问

我的是jsp页面啊？有没有？

追答

jsp页面即需要用html实现这个功能，可以用图片+javascript。

Answer 2

可以在程序里改啊，用最大值减去当前值。
9月

Answer 3

你要找的是swing里面的JSpinner组件吧

Answer 4

没有吧，没见过这样的

追问

真的没有吗？？我也表达不清楚。我qq1052900950 请加我吧。或者你qq多少。我把图发给你，你看看。