java中如何选择文件？
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How to choose file in java?
提问by Hemanth S. Vaddi
I need to get file path for my java program during runtime. Is there any way to use default dialog boxto choose a single fileand get its full path and name?
我需要在运行时获取我的 java 程序的文件路径。有没有办法使用默认对话框来选择单个文件并获取其完整路径和名称？
Its just picking a file and get its path into a String object
它只是选择一个文件并将其路径放入一个 String 对象中
Can you please provide the code for it or a tutorial?
你能提供它的代码或教程吗？
PS: Windows OS
PS：Windows 操作系统
采纳答案by matt
Here is the example from the JFileChooserdocs copy pasta with the parent sent to null.
这是JFileChooser文档复制面食中的示例，父级发送到null.
public class PickAFile {
public static void main(String[] args){
JFileChooser chooser = new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter(
"JPG & GIF Images", "jpg", "gif");
chooser.setFileFilter(filter);
int returnVal = chooser.showOpenDialog(null);
if(returnVal == JFileChooser.APPROVE_OPTION) {
System.out.println("You chose to open this file: " +
chooser.getSelectedFile().getName());
}
}
}
If you don't like the look of the JFileChooser try the FileDialog.
如果您不喜欢 JFileChooser 的外观，请尝试使用FileDialog.
FileDialog dialog = new FileDialog((Frame)null, "Select File to Open");
dialog.setMode(FileDialog.LOAD);
dialog.setVisible(true);
String file = dialog.getFile();
System.out.println(file + " chosen.");
