activate sourcecode formatting

.vscode/settings.json

@@ -1,4 +1,5 @@
 {
     "java.configuration.updateBuildConfiguration": "automatic",
-    "terminal.integrated.defaultProfile.linux": "bash"
+    "terminal.integrated.defaultProfile.linux": "bash",
+    "java.checkstyle.configuration": "/google_checks.xml"
 }

examples/AES.java

@@ -1,4 +1,3 @@
-/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
 /**
  * This program will demonstrate how to use "aes128-cbc".
  *
@@ -7,31 +6,29 @@
 import java.awt.*;
 import javax.swing.*;
 
-public class AES{
-  public static void main(String[] arg){
+public class AES {
+  public static void main(String[] arg) {
 
-    try{
-      JSch jsch=new JSch();
+    try {
+      JSch jsch = new JSch();
 
-      //jsch.setKnownHosts("/home/foo/.ssh/known_hosts");
+      // jsch.setKnownHosts("/home/foo/.ssh/known_hosts");
 
-      String host=null;
-      if(arg.length>0){
-        host=arg[0];
+      String host = null;
+      if (arg.length > 0) {
+        host = arg[0];
+      } else {
+        host = JOptionPane.showInputDialog("Enter username@hostname",
+            System.getProperty("user.name") + "@localhost");
       }
-      else{
-        host=JOptionPane.showInputDialog("Enter username@hostname",
-                                         System.getProperty("user.name")+
-                                         "@localhost"); 
-      }
-      String user=host.substring(0, host.indexOf('@'));
-      host=host.substring(host.indexOf('@')+1);
+      String user = host.substring(0, host.indexOf('@'));
+      host = host.substring(host.indexOf('@') + 1);
+
+      Session session = jsch.getSession(user, host, 22);
+      // session.setPassword("your password");
 
-      Session session=jsch.getSession(user, host, 22);
-      //session.setPassword("your password");
-
       // username and password will be given via UserInfo interface.
-      UserInfo ui=new MyUserInfo();
+      UserInfo ui = new MyUserInfo();
       session.setUserInfo(ui);
 
       session.setConfig("cipher.s2c", "aes128-cbc,3des-cbc,blowfish-cbc");
@@ -40,63 +37,61 @@ public static void main(String[] arg){
 
       session.connect();
 
-      Channel channel=session.openChannel("shell");
+      Channel channel = session.openChannel("shell");
 
       channel.setInputStream(System.in);
       channel.setOutputStream(System.out);
 
       channel.connect();
-    }
-    catch(Exception e){
+    } catch (Exception e) {
       System.out.println(e);
     }
   }
 
-  public static class MyUserInfo implements UserInfo, UIKeyboardInteractive{
-    public String getPassword(){ return passwd; }
-    public boolean promptYesNo(String str){
-      Object[] options={ "yes", "no" };
-      int foo=JOptionPane.showOptionDialog(null, 
-             str,
-             "Warning", 
-             JOptionPane.DEFAULT_OPTION, 
-             JOptionPane.WARNING_MESSAGE,
-             null, options, options[0]);
-       return foo==0;
+  public static class MyUserInfo implements UserInfo, UIKeyboardInteractive {
+    public String getPassword() {
+      return passwd;
+    }
+
+    public boolean promptYesNo(String str) {
+      Object[] options = {"yes", "no"};
+      int foo = JOptionPane.showOptionDialog(null, str, "Warning", JOptionPane.DEFAULT_OPTION,
+          JOptionPane.WARNING_MESSAGE, null, options, options[0]);
+      return foo == 0;
     }
-  
+
     String passwd;
-    JTextField passwordField=(JTextField)new JPasswordField(20);
-
-    public String getPassphrase(){ return null; }
-    public boolean promptPassphrase(String message){ return true; }
-    public boolean promptPassword(String message){
-      Object[] ob={passwordField}; 
-      int result=
-        JOptionPane.showConfirmDialog(null, ob, message,
-                                      JOptionPane.OK_CANCEL_OPTION);
-      if(result==JOptionPane.OK_OPTION){
-        passwd=passwordField.getText();
+    JTextField passwordField = (JTextField) new JPasswordField(20);
+
+    public String getPassphrase() {
+      return null;
+    }
+
+    public boolean promptPassphrase(String message) {
+      return true;
+    }
+
+    public boolean promptPassword(String message) {
+      Object[] ob = {passwordField};
+      int result = JOptionPane.showConfirmDialog(null, ob, message, JOptionPane.OK_CANCEL_OPTION);
+      if (result == JOptionPane.OK_OPTION) {
+        passwd = passwordField.getText();
         return true;
-      }
-      else{ 
-        return false; 
+      } else {
+        return false;
       }
     }
-    public void showMessage(String message){
+
+    public void showMessage(String message) {
       JOptionPane.showMessageDialog(null, message);
     }
-    final GridBagConstraints gbc = 
-      new GridBagConstraints(0,0,1,1,1,1,
-                             GridBagConstraints.NORTHWEST,
-                             GridBagConstraints.NONE,
-                             new Insets(0,0,0,0),0,0);
+
+    final GridBagConstraints gbc = new GridBagConstraints(0, 0, 1, 1, 1, 1,
+        GridBagConstraints.NORTHWEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0);
     private Container panel;
-    public String[] promptKeyboardInteractive(String destination,
-                                              String name,
-                                              String instruction,
-                                              String[] prompt,
-                                              boolean[] echo){
+
+    public String[] promptKeyboardInteractive(String destination, String name, String instruction,
+        String[] prompt, boolean[] echo) {
       panel = new JPanel();
       panel.setLayout(new GridBagLayout());
 
@@ -108,39 +103,34 @@ public String[] promptKeyboardInteractive(String destination,
 
       gbc.gridwidth = GridBagConstraints.RELATIVE;
 
-      JTextField[] texts=new JTextField[prompt.length];
-      for(int i=0; i<prompt.length; i++){
+      JTextField[] texts = new JTextField[prompt.length];
+      for (int i = 0; i < prompt.length; i++) {
         gbc.fill = GridBagConstraints.NONE;
         gbc.gridx = 0;
         gbc.weightx = 1;
-        panel.add(new JLabel(prompt[i]),gbc);
+        panel.add(new JLabel(prompt[i]), gbc);
 
         gbc.gridx = 1;
         gbc.fill = GridBagConstraints.HORIZONTAL;
         gbc.weighty = 1;
-        if(echo[i]){
-          texts[i]=new JTextField(20);
-        }
-        else{
-          texts[i]=new JPasswordField(20);
+        if (echo[i]) {
+          texts[i] = new JTextField(20);
+        } else {
+          texts[i] = new JPasswordField(20);
         }
         panel.add(texts[i], gbc);
         gbc.gridy++;
       }
 
-      if(JOptionPane.showConfirmDialog(null, panel, 
-                                       destination+": "+name,
-                                       JOptionPane.OK_CANCEL_OPTION,
-                                       JOptionPane.QUESTION_MESSAGE)
-         ==JOptionPane.OK_OPTION){
-        String[] response=new String[prompt.length];
-        for(int i=0; i<prompt.length; i++){
-          response[i]=texts[i].getText();
+      if (JOptionPane.showConfirmDialog(null, panel, destination + ": " + name,
+          JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE) == JOptionPane.OK_OPTION) {
+        String[] response = new String[prompt.length];
+        for (int i = 0; i < prompt.length; i++) {
+          response[i] = texts[i].getText();
         }
         return response;
-      }
-      else{
-        return null;  // cancel
+      } else {
+        return null; // cancel
       }
     }
   }

examples/ChangePassphrase.java

@@ -1,71 +1,64 @@
-/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
 /**
- * This program will demonstrate to change the passphrase for a
- * private key file instead of creating a new private key.
- *   $ CLASSPATH=.:../build javac ChangePassphrase.java
- *   $ CLASSPATH=.:../build java ChangePassphrase private-key
- * A passphrase will be prompted if the given private-key has been
- * encrypted.  After successfully loading the content of the
- * private-key, the new passphrase will be prompted and the given
- * private-key will be re-encrypted with that new passphrase.
+ * This program will demonstrate to change the passphrase for a private key file instead of creating
+ * a new private key. $ CLASSPATH=.:../build javac ChangePassphrase.java $ CLASSPATH=.:../build java
+ * ChangePassphrase private-key A passphrase will be prompted if the given private-key has been
+ * encrypted. After successfully loading the content of the private-key, the new passphrase will be
+ * prompted and the given private-key will be re-encrypted with that new passphrase.
  *
  */
 import com.jcraft.jsch.*;
 import javax.swing.*;
 
-class ChangePassphrase{
-  public static void main(String[] arg){
-    if(arg.length!=1){
+class ChangePassphrase {
+  public static void main(String[] arg) {
+    if (arg.length != 1) {
       System.err.println("usage: java ChangePassphrase private_key");
       System.exit(-1);
     }
 
-    JSch jsch=new JSch();
+    JSch jsch = new JSch();
 
-    String pkey=arg[0];
+    String pkey = arg[0];
 
-    try{
-      KeyPair kpair=KeyPair.load(jsch, pkey);
+    try {
+      KeyPair kpair = KeyPair.load(jsch, pkey);
 
-      System.out.println(pkey+" has "+(kpair.isEncrypted()?"been ":"not been ")+"encrypted");
+      System.out
+          .println(pkey + " has " + (kpair.isEncrypted() ? "been " : "not been ") + "encrypted");
 
-      String passphrase="";
-      while(kpair.isEncrypted()){
-        JTextField passphraseField=(JTextField)new JPasswordField(20);
-        Object[] ob={passphraseField};
-        int result=JOptionPane.showConfirmDialog(null, ob, 
-                                                 "Enter passphrase for "+pkey,
-                                                 JOptionPane.OK_CANCEL_OPTION);
-        if(result!=JOptionPane.OK_OPTION){
+      String passphrase = "";
+      while (kpair.isEncrypted()) {
+        JTextField passphraseField = (JTextField) new JPasswordField(20);
+        Object[] ob = {passphraseField};
+        int result = JOptionPane.showConfirmDialog(null, ob, "Enter passphrase for " + pkey,
+            JOptionPane.OK_CANCEL_OPTION);
+        if (result != JOptionPane.OK_OPTION) {
           System.exit(-1);
         }
-        passphrase=passphraseField.getText();
-        if(!kpair.decrypt(passphrase)){
-          System.out.println("failed to decrypt "+pkey);
-        }
-        else{
-          System.out.println(pkey+" is decrypted.");
+        passphrase = passphraseField.getText();
+        if (!kpair.decrypt(passphrase)) {
+          System.out.println("failed to decrypt " + pkey);
+        } else {
+          System.out.println(pkey + " is decrypted.");
         }
       }
 
-      passphrase="";
+      passphrase = "";
 
-      JTextField passphraseField=(JTextField)new JPasswordField(20);
-      Object[] ob={passphraseField};
-      int result=JOptionPane.showConfirmDialog(null, ob, 
-                                               "Enter new passphrase for "+pkey+
-                                               " (empty for no passphrase)",
-                                               JOptionPane.OK_CANCEL_OPTION);
-      if(result!=JOptionPane.OK_OPTION){
+      JTextField passphraseField = (JTextField) new JPasswordField(20);
+      Object[] ob = {passphraseField};
+      int result = JOptionPane.showConfirmDialog(null, ob,
+          "Enter new passphrase for " + pkey + " (empty for no passphrase)",
+          JOptionPane.OK_CANCEL_OPTION);
+      if (result != JOptionPane.OK_OPTION) {
         System.exit(-1);
       }
-      passphrase=passphraseField.getText();
+      passphrase = passphraseField.getText();
 
       kpair.setPassphrase(passphrase);
       kpair.writePrivateKey(pkey);
       kpair.dispose();
-    }
-    catch(Exception e){
+    } catch (Exception e) {
       System.out.println(e);
     }
     System.exit(0);