8215281: Use String.isEmpty() when applicable in java.base

Reviewed-by: dfuchs, alanb
This commit is contained in:
Claes Redestad 2018-12-13 15:31:05 +01:00
parent c998ead188
commit a3df1d618e
155 changed files with 340 additions and 382 deletions

View file

@ -228,7 +228,7 @@ public class AlgorithmParameterGenerator {
throws NoSuchAlgorithmException, NoSuchProviderException
{
Objects.requireNonNull(algorithm, "null algorithm name");
if (provider == null || provider.length() == 0)
if (provider == null || provider.isEmpty())
throw new IllegalArgumentException("missing provider");
Object[] objs = Security.getImpl(algorithm,
"AlgorithmParameterGenerator",

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@ -209,7 +209,7 @@ public class AlgorithmParameters {
throws NoSuchAlgorithmException, NoSuchProviderException
{
Objects.requireNonNull(algorithm, "null algorithm name");
if (provider == null || provider.length() == 0)
if (provider == null || provider.isEmpty())
throw new IllegalArgumentException("missing provider");
Object[] objs = Security.getImpl(algorithm, "AlgorithmParameters",
provider);

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@ -913,7 +913,7 @@ public class KeyStore {
throws KeyStoreException, NoSuchProviderException
{
Objects.requireNonNull(type, "null type name");
if (provider == null || provider.length() == 0)
if (provider == null || provider.isEmpty())
throw new IllegalArgumentException("missing provider");
try {
Object[] objs = Security.getImpl(type, "KeyStore", provider);

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@ -237,7 +237,7 @@ public abstract class MessageDigest extends MessageDigestSpi {
throws NoSuchAlgorithmException, NoSuchProviderException
{
Objects.requireNonNull(algorithm, "null algorithm name");
if (provider == null || provider.length() == 0)
if (provider == null || provider.isEmpty())
throw new IllegalArgumentException("missing provider");
Object[] objs = Security.getImpl(algorithm, "MessageDigest", provider);
if (objs[0] instanceof MessageDigest) {

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@ -222,7 +222,7 @@ public abstract class Permission implements Guard, java.io.Serializable {
*/
public String toString() {
String actions = getActions();
if ((actions == null) || (actions.length() == 0)) { // OPTIONAL
if (actions == null || actions.isEmpty()) { // OPTIONAL
return "(\"" + getClass().getName() + "\" \"" + name + "\")";
} else {
return "(\"" + getClass().getName() + "\" \"" + name +

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@ -456,7 +456,7 @@ public abstract class Policy {
throws NoSuchProviderException, NoSuchAlgorithmException {
Objects.requireNonNull(type, "null type name");
if (provider == null || provider.length() == 0) {
if (provider == null || provider.isEmpty()) {
throw new IllegalArgumentException("missing provider");
}

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@ -942,7 +942,7 @@ public class SecureRandom extends java.util.Random {
}
});
if ((property == null) || (property.length() == 0)) {
if (property == null || property.isEmpty()) {
throw new NoSuchAlgorithmException(
"Null/empty securerandom.strongAlgorithms Security Property");
}

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@ -649,7 +649,7 @@ public final class Security {
}
}
if ((candidates == null) || (candidates.isEmpty()))
if (candidates == null || candidates.isEmpty())
return null;
Object[] candidatesArray = candidates.toArray();
@ -1005,11 +1005,11 @@ public final class Security {
String algName = null;
String attrName = null;
if (filterValue.length() == 0) {
if (filterValue.isEmpty()) {
// The filterValue is an empty string. So the filterKey
// should be in the format of <crypto_service>.<algorithm_or_type>.
algName = filterKey.substring(algIndex + 1).trim();
if (algName.length() == 0) {
if (algName.isEmpty()) {
// There must be a algorithm or type name.
throw new InvalidParameterException("Invalid filter");
}
@ -1024,7 +1024,7 @@ public final class Security {
throw new InvalidParameterException("Invalid filter");
} else {
attrName = filterKey.substring(attrIndex + 1).trim();
if (attrName.length() == 0) {
if (attrName.isEmpty()) {
// There is no attribute name in the filter.
throw new InvalidParameterException("Invalid filter");
}
@ -1070,7 +1070,7 @@ public final class Security {
**/
public static Set<String> getAlgorithms(String serviceName) {
if ((serviceName == null) || (serviceName.length() == 0) ||
if ((serviceName == null) || (serviceName.isEmpty()) ||
(serviceName.endsWith("."))) {
return Collections.emptySet();
}

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@ -360,7 +360,7 @@ public abstract class Signature extends SignatureSpi {
Objects.requireNonNull(algorithm, "null algorithm name");
if (algorithm.equalsIgnoreCase(RSA_SIGNATURE)) {
// exception compatibility with existing code
if ((provider == null) || (provider.length() == 0)) {
if (provider == null || provider.isEmpty()) {
throw new IllegalArgumentException("missing provider");
}
Provider p = Security.getProvider(provider);

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@ -210,7 +210,7 @@ public class TrustAnchor {
if (caName == null)
throw new NullPointerException("the caName parameter must be " +
"non-null");
if (caName.length() == 0)
if (caName.isEmpty())
throw new IllegalArgumentException("the caName " +
"parameter must be a non-empty String");
// check if caName is formatted correctly