是否可以使用 jtextfield 和 Jlist 进行自动完成?

本文介绍了是否可以使用 jtextfield 和 Jlist 进行自动完成?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想在 java 中创建一个自动完成程序，当用户在 JTextfield 中键入字符/字符串时，它应该立即提供建议列表.问题是我对如何去做感到困惑.

I want to create an auto-complete program in java which should provide a list of suggestions instantly when the user types a character/String inside a JTextfield. The problem is that I am confused on how to do it.

有人可以提供有关上述问题的想法或示例吗?

Could somebody provide an idea or a sample on the said problem?

推荐答案

1) 您必须在使用前对数组进行排序以获得更好的性能...

1) you have to sort your array before use for better performance...

2) 正如我提到的，你必须学习 这两个类

2) as I mentioned you have to take these two clasess

3) 不要忘记设置初始值，以便更好地使用这些组件

3) don't forget set initial value for better and nicest work with these Components

简单输出

来自代码

import java.awt.*; import java.util.ArrayList; import javax.swing.*; public class AutoCompleteTextField { private JFrame frame; private ArrayList<String> listSomeString = new ArrayList<String>(); private Java2sAutoTextField someTextField = new Java2sAutoTextField(listSomeString); private ArrayList<String> listSomeAnotherString = new ArrayList<String>(); private Java2sAutoComboBox someComboBox = new Java2sAutoComboBox(listSomeAnotherString); public AutoCompleteTextField() { listSomeString.add("-"); listSomeString.add("Snowboarding"); listSomeString.add("Rowing"); listSomeString.add("Knitting"); listSomeString.add("Speed reading"); listSomeString.add("Pool"); listSomeString.add("None of the above"); // listSomeAnotherString.add("-"); listSomeAnotherString.add("XxxZxx Snowboarding"); listSomeAnotherString.add("AaaBbb Rowing"); listSomeAnotherString.add("CccDdd Knitting"); listSomeAnotherString.add("Eee Fff Speed reading"); listSomeAnotherString.add("Eee Fff Pool"); listSomeAnotherString.add("Eee Fff None of the above"); // someTextField.setFont(new Font("Serif", Font.BOLD, 16)); someTextField.setForeground(Color.black); someTextField.setBackground(Color.orange); someTextField.setName("someTextField"); someTextField.setDataList(listSomeString); // someComboBox.setPrototypeDisplayValue("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"); someComboBox.setFont(new Font("Serif", Font.BOLD, 16)); someComboBox.setForeground(Color.black); someComboBox.setBackground(Color.YELLOW); someComboBox.getEditor().selectAll(); someComboBox.getEditor().getEditorComponent().setBackground(Color.YELLOW); ((JTextField) someComboBox.getEditor().getEditorComponent()).setDisabledTextColor(Color.black); someComboBox.setName("someComboBox"); someComboBox.setDataList(listSomeAnotherString); // frame = new JFrame(); frame.setLayout(new GridLayout(0, 1, 10, 10)); frame.add(someTextField); frame.add(someComboBox); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocation(100, 100); frame.pack(); frame.setVisible(true); // SwingUtilities.invokeLater(new Runnable() { @Override public void run() { someTextField.setText("-"); someComboBox.getEditor().setItem(0); someComboBox.getEditor().selectAll(); someTextField.grabFocus(); someTextField.requestFocus(); someTextField.setText(someTextField.getText()); someTextField.selectAll(); } }); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { AutoCompleteTextField aCTF = new AutoCompleteTextField(); } }); } }