Pessoal uma ajuda por favor Esse meu codigo pega o arquivo xml e zipa na minha unidade c: queria que ao inves de salvar na unidade c: o usuario salvasse onde ele achasse melhor alguem sabe como faço isso? Obrigad…

Você pode usar o JFileChooser, http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html flw
Mais pessoal minha aplicação é web e não swing
Salvar arquivo onde o usuario achar melhor

Olá jemoliveira, tenho uma interface aqui de um compilador, o qual eu desenvolvi pra um trabalho da faculdade. Tirei o código não relevante, e acho que poderá te ajudar a entender como o FileChooser funciona.
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

/**
 *
 * @author serjaum
 */
public class TesteFileChooser extends javax.swing.JFrame {

    private static final long serialVersionUID = 1L;
    public TesteFileChooser() {
        initComponents();
    }

     private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jScrollPane2 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jLabel1 = new javax.swing.JLabel();
        jButtonLex = new javax.swing.JButton();
        jButtonSint = new javax.swing.JButton();
        jButtonSair = new javax.swing.JButton();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenuItemAbrir = new javax.swing.JMenuItem();
        jMenuSalvar = new javax.swing.JMenuItem();
        jMenuLimpar = new javax.swing.JMenuItem();
        fileChooser = new javax.swing.JFileChooser(".");

        getContentPane().setLayout(null);

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Compilador");
        setResizable(false);
        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jTextArea1.setLineWrap(true);
        jScrollPane1.setViewportView(jTextArea1);

        getContentPane().add(jScrollPane1);
        jScrollPane1.setBounds(20, 20, 520, 430);

        jTextArea2.setColumns(20);
        jTextArea2.setRows(5);
        jScrollPane2.setViewportView(jTextArea2);

        getContentPane().add(jScrollPane2);
        jScrollPane2.setBounds(20, 470, 520, 110);

        jLabel1.setFont(new java.awt.Font("Dialog", 0, 10));
        jLabel1.setText("Console");
        getContentPane().add(jLabel1);
        jLabel1.setBounds(30, 450, 45, 20);

        jButtonLex.setText("L\u00e9xico");
        jButtonLex.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonLexActionPerformed(evt);
            }
        });

        getContentPane().add(jButtonLex);
        jButtonLex.setBounds(20, 590, 110, 25);

        jButtonSint.setText("Sint\u00e1tico");
        jButtonSint.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonSintActionPerformed(evt);
            }
        });

        getContentPane().add(jButtonSint);
        jButtonSint.setBounds(240, 590, 88, 25);

        jButtonSair.setText("Sair");
        jButtonSair.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonSairActionPerformed(evt);
            }
        });

        getContentPane().add(jButtonSair);
        jButtonSair.setBounds(450, 590, 90, 25);

        jMenu1.setText("Menu");

        jMenuItemAbrir.setText("Abrir");
        jMenuItemAbrir.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuItemAbrirActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuItemAbrir);

        jMenuSalvar.setText("Salvar");
        jMenuSalvar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuSalvarActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuSalvar);
        jMenuLimpar.setText("Limpar");
        jMenuLimpar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jMenuLimparActionPerformed(evt);
            }
        });

        jMenu1.add(jMenuLimpar);

        jMenuBar1.add(jMenu1);

        setJMenuBar(jMenuBar1);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-566)/2, (screenSize.height-680)/2, 566, 680);
    } 
    private void jButtonSairActionPerformed(java.awt.event.ActionEvent evt) { 
           System.exit(0);
    } 

    private void jButtonSintActionPerformed(java.awt.event.ActionEvent evt) { 
    	 String[] args = new String[1];
    	 args[0] = fileChooser.getSelectedFile().getAbsolutePath();
    	
    } 

    private void jButtonLexActionPerformed(java.awt.event.ActionEvent evt) { 
    	 String[] args = new String[1];
    	 args[0] = fileChooser.getSelectedFile().getAbsolutePath();
    	
    } 

    private void jMenuLimparActionPerformed(java.awt.event.ActionEvent evt) { 
    	jTextArea1.setText("");
    	jTextArea2.setText("");
    }  

    private void jMenuSalvarActionPerformed(java.awt.event.ActionEvent evt) { 
    	int res = fileChooser.showSaveDialog(this);
        if(res == JFileChooser.APPROVE_OPTION){
            File arq = fileChooser.getSelectedFile();
            try{
            	 
            	fileChooser.showOpenDialog(this);
   
            	String s = fileChooser.getSelectedFile().getAbsolutePath();
            	System.out.println("fileChooser.getSelectedFile().getAbsolutePath(): " + s);

                escreveArquivo(jTextArea1.getText(), arq.getPath());

                System.out.println("Nome do arquivo escolhido: " + arq.getPath());

            } catch(IOException ioe){
                JOptionPane.showMessageDialog(null, "Não foi possível salvar arquivo!");
            }
        }
    } 

    private void jMenuItemAbrirActionPerformed(java.awt.event.ActionEvent evt) { 
    	int res = fileChooser.showOpenDialog(this);

         if(res == JFileChooser.APPROVE_OPTION){
             File arq = fileChooser.getSelectedFile();
             try{
            	 jTextArea1.setText(retornaString(arq.getPath()));
             } catch(Exception ex){
                 JOptionPane.showMessageDialog(null, "Não foi possível abrir o arquivo" +  arq.getPath() + "!", 				"Leitura de arquivo", JOptionPane.ERROR_MESSAGE);
             }
         }
    } 
 
    public void escreveArquivo(String conteudo, String fileName) throws IOException {

        PrintWriter out = new PrintWriter(new FileWriter(fileName));
        out.print(conteudo);
        out.close();
        JOptionPane.showMessageDialog(null, "Arquivo salvo com sucesso!");

    }
 
    public String retornaString(String fileName) throws IOException {

        BufferedReader in = new BufferedReader(new FileReader(fileName));
        String line;
        StringBuffer buffer = new StringBuffer();

        while( (line = in.readLine()) != null ){
            buffer.append(line + "\n");
        }

        in.close();
        return buffer.toString();

    }

    public String retornaStringTok(String fileName) throws IOException {

    	BufferedReader in = new BufferedReader(new FileReader(fileName));
    	String line;
    	StringBuffer buffer = new StringBuffer();

    	while( (line = in.readLine()) != null ){
    	    buffer.append(line + "\n");
    	}

    	jTextArea2.setText(buffer.toString());

    	in.close();
        	return buffer.toString();
 
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TesteFileChooser().setVisible(true);
            }
        });
    }

    private javax.swing.JButton jButtonLex;
    private javax.swing.JButton jButtonSair;
    private javax.swing.JButton jButtonSint;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuItemAbrir;
    private javax.swing.JMenuItem jMenuLimpar;
    private javax.swing.JMenuItem jMenuSalvar;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JTextArea jTextArea1;
    public static javax.swing.JTextArea jTextArea2;
    private javax.swing.JFileChooser fileChooser;

}
Abraço :grin:
4 Respostas

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