Move to Java 8

README.md

@@ -12,7 +12,7 @@ It is an independent open source implementation that is not affiliated with or e
 
 * Supports ACME protocol up to [draft 02](https://tools.ietf.org/html/draft-ietf-acme-acme-02), with a few parts of [draft 03](https://tools.ietf.org/html/draft-ietf-acme-acme-03) and [draft 04](https://tools.ietf.org/html/draft-ietf-acme-acme-04)
 * Easy to use Java API
-* Requires JRE 7 or higher
+* Requires JRE 8 or higher
 * Built with maven, packages available at [Maven Central](http://search.maven.org/#search|ga|1|g%3A%22org.shredzone.acme4j%22)
 * Small, only requires [jose4j](https://bitbucket.org/b_c/jose4j/wiki/Home) and [slf4j](http://www.slf4j.org/) as dependencies
 * Extensive unit tests

acme4j-client/src/main/java/org/shredzone/acme4j/RevocationReason.java

@@ -13,6 +13,8 @@
  */
 package org.shredzone.acme4j;
 
+import java.util.Arrays;
+
 /**
  * Enumeration of revocation reasons.
  *
@@ -53,12 +55,10 @@ public enum RevocationReason {
      * @return Matching {@link RevocationReason}, or {@code null} if not known
      */
     public static RevocationReason code(int reasonCode) {
-        for (RevocationReason rr : values()) {
+        return Arrays.stream(values())
-            if (rr.reasonCode == reasonCode) {
+                .filter(rr -> rr.reasonCode == reasonCode)
-                return rr;
+                .findFirst()
-            }
+                .orElse(null);
-        }
-        return null;
     }
 
 }

acme4j-client/src/main/java/org/shredzone/acme4j/Status.java

@@ -13,6 +13,8 @@
  */
 package org.shredzone.acme4j;
 
+import java.util.Arrays;
+
 /**
  * Status codes of challenges and authorizations.
  */
@@ -30,12 +32,10 @@ public enum Status {
      */
     public static Status parse(String str) {
         String check = str.toUpperCase();
-        for (Status s : values()) {
+        return Arrays.stream(values())
-            if (s.name().equals(check)) {
+                .filter(s -> s.name().equals(check))
-                return s;
+                .findFirst()
-            }
+                .orElse(Status.UNKNOWN);
-        }
-        return Status.UNKNOWN;
     }
 
     /**

acme4j-client/src/main/java/org/shredzone/acme4j/connector/DefaultConnection.java

@@ -28,11 +28,12 @@ import java.security.cert.CertificateException;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.Date;
 import java.util.List;
-import java.util.Map;
 import java.util.Objects;
+import java.util.OptionalInt;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -179,10 +180,9 @@ public class DefaultConnection implements Connection {
 
         try {
             int rc = conn.getResponseCode();
-            for (int s : httpStatus) {
+            OptionalInt match = Arrays.stream(httpStatus).filter(s -> s == rc).findFirst();
-                if (s == rc) {
+            if (match.isPresent()) {
-                    return rc;
+                return match.getAsInt();
-                }
             }
 
             if (!"application/problem+json".equals(conn.getHeaderField(CONTENT_TYPE_HEADER))) {
@@ -420,11 +420,11 @@ public class DefaultConnection implements Connection {
             return;
         }
 
-        for (Map.Entry<String, List<String>> entry : conn.getHeaderFields().entrySet()) {
+        conn.getHeaderFields().forEach((key, headers) ->
-            for (String value : entry.getValue()) {
+            headers.forEach(value ->
-                LOG.debug("HEADER {}: {}", entry.getKey(), value);
+                LOG.debug("HEADER {}: {}", key, value)
-            }
+            )
-        }
+        );
     }
 
     /**

acme4j-client/src/main/java/org/shredzone/acme4j/util/JSON.java

@@ -13,6 +13,7 @@
  */
 package org.shredzone.acme4j.util;
 
+import static java.util.stream.Collectors.joining;
 import static org.shredzone.acme4j.util.AcmeUtils.parseTimestamp;
 
 import java.io.BufferedReader;
@@ -82,20 +83,12 @@ public final class JSON implements Serializable {
      * @return {@link JSON} of the read content.
      */
     public static JSON parse(InputStream in) throws IOException {
-        StringBuilder sb = new StringBuilder();
-
         try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, "utf-8"))) {
-            String line = reader.readLine();
+            String json = reader.lines().map(String::trim).collect(joining());
-
+            return parse(json);
-            while (line != null) {
-                sb.append(line.trim());
-                line = reader.readLine();
         }
     }
 
-        return parse(sb.toString());
-    }
-
     /**
      * Parses JSON from a String.
      *

acme4j-utils/src/main/java/org/shredzone/acme4j/util/CSRBuilder.java

@@ -13,6 +13,7 @@
  */
 package org.shredzone.acme4j.util;
 
+import static java.util.stream.Collectors.joining;
 import static org.shredzone.acme4j.util.AcmeUtils.toAce;
 
 import java.io.IOException;
@@ -23,6 +24,7 @@ import java.security.KeyPair;
 import java.security.PrivateKey;
 import java.security.interfaces.ECKey;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.Objects;
@@ -86,9 +88,7 @@ public class CSRBuilder {
      *            Collection of domain names to add
      */
     public void addDomains(Collection<String> domains) {
-        for (String domain : domains) {
+        domains.forEach(this::addDomain);
-            addDomain(domain);
-        }
     }
 
     /**
@@ -100,9 +100,7 @@ public class CSRBuilder {
      *            Domain names to add
      */
     public void addDomains(String... domains) {
-        for (String domain : domains) {
+        Arrays.stream(domains).forEach(this::addDomain);
-            addDomain(domain);
-        }
     }
 
     /**
@@ -237,9 +235,7 @@ public class CSRBuilder {
     public String toString() {
         StringBuilder sb = new StringBuilder();
         sb.append(namebuilder.build());
-        for (String domain : namelist) {
+        sb.append(namelist.stream().collect(joining(",DNS=", ",DNS=", "")));
-            sb.append(",DNS=").append(domain);
-        }
         return sb.toString();
     }
 

pom.xml

@@ -70,8 +70,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.6.0</version>
                 <configuration>
-                    <source>1.7</source>
+                    <source>1.8</source>
-                    <target>1.7</target>
+                    <target>1.8</target>
                 </configuration>
             </plugin>
             <plugin>