Jcombobox算法

Question

    jComboBox1.addActionListener(new java.awt.event.ActionListener() {
        @Override
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            jComboBox1ActionPerformed(evt);

          if (jComboBox1.getSelectedItem().equals(" ")) 
            {
                rlsum = addElement(sumthing );
            }
         if (jComboBox1.getSelectedItem().equals("S")) 
            {
                rlsum = addElement(sumthing/64 );
            } 
         if (jComboBox1.getSelectedItem().equals("Z")) 
            {
                rlsum = addElement(sumthing/220 );
            } 
       }

        private Object addElement(double i) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }
    });

我想知道如何让变量time被读取而不是每次都被抛出……我将带有匹配标签的actionlisteners添加到我的Jcombo框中，但每次我选择一个标签时，它都会引用抛出的代码。

Answer 1

您的问题出在下面的代码中。在addElement操作过程中抛出UnsupportedException

private Object addElement(double i) {
            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
        }

首先，使用与应用程序需求相关的逻辑实现addElement。

将addElement()替换为以下代码，以避免抛出异常

 private Object addElement(double i) {

            //put your business logic, add relevant exception handling for your requirement
            }