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src/java.base/share/classes/sun/net/ftp/impl/FtpClient.java
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rev 51919 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: dfuchs, alanb
@@ -431,11 +431,11 @@
replyBuf.setLength(0);
if (logger.isLoggable(PlatformLogger.Level.FINEST)) {
logger.finest("Server [" + serverAddr + "] --> " + response);
}
- if (response.length() == 0) {
+ if (response.isEmpty()) {
code = -1;
} else {
try {
code = Integer.parseInt(response, 0, 3, 10);
} catch (NumberFormatException e) {
@@ -1047,11 +1047,11 @@
*/
public sun.net.ftp.FtpClient login(String user, char[] password) throws sun.net.ftp.FtpProtocolException, IOException {
if (!isConnected()) {
throw new sun.net.ftp.FtpProtocolException("Not connected yet", FtpReplyCode.BAD_SEQUENCE);
}
- if (user == null || user.length() == 0) {
+ if (user == null || user.isEmpty()) {
throw new IllegalArgumentException("User name can't be null or empty");
}
tryLogin(user, password);
// keep the welcome message around so we can
@@ -1086,11 +1086,11 @@
public sun.net.ftp.FtpClient login(String user, char[] password, String account) throws sun.net.ftp.FtpProtocolException, IOException {
if (!isConnected()) {
throw new sun.net.ftp.FtpProtocolException("Not connected yet", FtpReplyCode.BAD_SEQUENCE);
}
- if (user == null || user.length() == 0) {
+ if (user == null || user.isEmpty()) {
throw new IllegalArgumentException("User name can't be null or empty");
}
tryLogin(user, password);
/*
@@ -1150,11 +1150,11 @@
* @param remoteDirectory path of the directory to CD to.
* @return <code>true</code> if the operation was successful.
* @exception <code>FtpProtocolException</code>
*/
public sun.net.ftp.FtpClient changeDirectory(String remoteDirectory) throws sun.net.ftp.FtpProtocolException, IOException {
- if (remoteDirectory == null || "".equals(remoteDirectory)) {
+ if (remoteDirectory == null || remoteDirectory.isEmpty()) {
throw new IllegalArgumentException("directory can't be null or empty");
}
issueCommandCheck("CWD " + remoteDirectory);
return this;
@@ -1736,11 +1736,11 @@
* the server returned an error, which can be checked with
* {@link #getLastReplyCode()}.
* @throws IOException if an error occurs during the transmission.
*/
public long getSize(String path) throws sun.net.ftp.FtpProtocolException, IOException {
- if (path == null || path.length() == 0) {
+ if (path == null || path.isEmpty()) {
throw new IllegalArgumentException("path can't be null or empty");
}
issueCommandCheck("SIZE " + path);
if (lastReplyCode == FtpReplyCode.FILE_STATUS) {
String s = getResponseString();
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