Java Swing - 如何將400,000行值存儲(chǔ)到JComboBox中
我們想知道如何將400,000行值存儲(chǔ)到JComboBox中。
import java.awt.Color;
import java.awt.GridLayout;
import java.util.Vector;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTextField;
public class Main {
Vector<String> listSomeString = new Vector<String>();
JComboBox someComboBox = new JComboBox(listSomeString);
JFrame frame;
public Main() {
for (int i = 0; i < 100000; i++) {
listSomeString.add("-");
listSomeString.add("A");
listSomeString.add("B");
listSomeString.add("C");
listSomeString.add("D");
}
someComboBox.setEditable(true);
someComboBox.getEditor().getEditorComponent().setBackground(Color.YELLOW);
((JTextField) someComboBox.getEditor().getEditorComponent())
.setBackground(Color.YELLOW);
frame = new JFrame();
frame.setLayout(new GridLayout(0, 1, 10, 10));
frame.add(someComboBox);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocation(100, 100);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
new Main();
}
}
【jcombobox】
