如何將字符串轉換為ComboBoxModel

Question

我有2個jframe。 我想要的是在第二個jframe的comboBox中可以看到nit“ 555”的值，輸入的數據存儲在CompanyClass中

comboBoxName.setModel(new CompanyClass().getNit());

getNit這是一個字符串

Answer 1

嘗試以下陳述

    String[] content = {"A", "B"}; // Here you can have model eg: CompanyClass
    JComboBox<String> cb = new JComboBox<String>();
    ComboBoxModel<String> model = cb.getModel();

    if (model instanceof DefaultComboBoxModel) {
        DefaultComboBoxModel dcbm = (DefaultComboBoxModel) model;
        dcbm.removeAllElements();
        for (String value : content) {
            dcbm.addElement(value);
        }
    }

Answer 2

首先，您必須為模型定義標簽。

String labels[] = { "A", "B", "C", "D", "E" };
DefaultComboBoxModel model = new DefaultComboBoxModel(labels);
JComboBox comboBoxName = new JComboBox();
comboBoxName.setModel(model);