import java.applet.Applet;
import java.awt.Choice;
import java.awt.Label;
import java.awt.TextArea;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.File;
public class FileTest extends Applet implements ItemListener{
Label lb=new Label("请选择磁盘目录");
TextArea ta=new TextArea(30,50);
Choice txt=new Choice();
public void init(){
add(lb);
txt.addItem("C");
txt.addItem("D");
txt.addItem("E");
txt.addItem("F");
add(txt);
txt.addItemListener(this);
add(ta);
}
public void itemStateChanged(ItemEvent e) {
if(txt.getSelectedItem()=="C"){
File file1=new File("C:\\");
String[] q=file1.list();
for(int i=0;i<q.length;i++){
ta.setText(q[i]);
}
}
}
}
为什么在文本框显示不出来我选择的路径?
新手 请高手帮忙 谢谢了!!!
import java.awt.Choice;
import java.awt.Label;
import java.awt.TextArea;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.File;
public class FileTest extends Applet implements ItemListener{
Label lb=new Label("请选择磁盘目录");
TextArea ta=new TextArea(30,50);
Choice txt=new Choice();
public void init(){
add(lb);
txt.addItem("C");
txt.addItem("D");
txt.addItem("E");
txt.addItem("F");
add(txt);
txt.addItemListener(this);
add(ta);
}
public void itemStateChanged(ItemEvent e) {
if(txt.getSelectedItem()=="C"){
File file1=new File("C:\\");
String[] q=file1.list();
for(int i=0;i<q.length;i++){
ta.setText(q[i]);
}
}
}
}
为什么在文本框显示不出来我选择的路径?
新手 请高手帮忙 谢谢了!!!
public class FileTest {
public static void main(String[] args) {
File file=new File("F:\\");
FileTest fileTest=new FileTest();
fileTest.showDirectory(new File("E:\\"));
}
public void showDirectory(File ftemp){
if(ftemp.isDirectory()){
File[] childfile= ftemp.listFiles();
for (File fileItem : childfile) {
showDirectory(fileItem);
}
}else{
System.out.println(ftemp.getName());
}
}
}