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formatting work

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This commit is contained in:
eugenp
2017-01-29 16:01:58 +02:00
parent 1eb53d544c
commit 44bf48068f
44 changed files with 341 additions and 484 deletions
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8
core-java-9/src/main/java/com/baeldung/java9/language/PrivateInterface.java
View File

@@ -1,16 +1,16 @@
package com.baeldung.java9.language;
public interface PrivateInterface {
private static String staticPrivate() {
return "static private";
}
private String instancePrivate() {
return "instance private";
}
public default void check(){
public default void check() {
String result = staticPrivate();
if (!result.equals("static private"))
throw new AssertionError("Incorrect result for static private interface method");

23
core-java-9/src/main/java/com/baeldung/java9/process/ProcessUtils.java
View File

@@ -8,37 +8,36 @@ import java.time.Duration;
import java.time.Instant;
import java.util.stream.Stream;
public class ProcessUtils {
public static String getClassPath(){
public static String getClassPath() {
String cp = System.getProperty("java.class.path");
System.out.println("ClassPath is "+cp);
System.out.println("ClassPath is " + cp);
return cp;
}
public static File getJavaCmd() throws IOException{
public static File getJavaCmd() throws IOException {
String javaHome = System.getProperty("java.home");
File javaCmd;
if(System.getProperty("os.name").startsWith("Win")){
if (System.getProperty("os.name").startsWith("Win")) {
javaCmd = new File(javaHome, "bin/java.exe");
}else{
} else {
javaCmd = new File(javaHome, "bin/java");
}
if(javaCmd.canExecute()){
if (javaCmd.canExecute()) {
return javaCmd;
}else{
} else {
throw new UnsupportedOperationException(javaCmd.getCanonicalPath() + " is not executable");
}
}
public static String getMainClass(){
public static String getMainClass() {
return System.getProperty("sun.java.command");
}
public static String getSystemProperties(){
StringBuilder sb = new StringBuilder();
System.getProperties().forEach((s1, s2) -> sb.append(s1 +" - "+ s2) );
public static String getSystemProperties() {
StringBuilder sb = new StringBuilder();
System.getProperties().forEach((s1, s2) -> sb.append(s1 + " - " + s2));
return sb.toString();
}
}

1
core-java-9/src/main/java/com/baeldung/java9/process/ServiceMain.java
View File

@@ -8,7 +8,6 @@ public class ServiceMain {
ProcessHandle thisProcess = ProcessHandle.current();
long pid = thisProcess.getPid();
Optional<String[]> opArgs = Optional.ofNullable(args);
String procName = opArgs.map(str -> str.length > 0 ? str[0] : null).orElse(System.getProperty("sun.java.command"));

17
core-java-9/src/test/java/com/baeldung/java9/Java9OptionalsStreamTest.java
View File

@@ -19,10 +19,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithFilter() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.filter(Optional::isPresent)
.map(Optional::get)
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().filter(Optional::isPresent).map(Optional::get).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));
@@ -33,9 +30,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithFlatMap() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.flatMap(o -> o.isPresent() ? Stream.of(o.get()) : Stream.empty())
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().flatMap(o -> o.isPresent() ? Stream.of(o.get()) : Stream.empty()).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));
@@ -46,9 +41,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithFlatMap2() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.flatMap(o -> o.map(Stream::of).orElseGet(Stream::empty))
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().flatMap(o -> o.map(Stream::of).orElseGet(Stream::empty)).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));
@@ -59,9 +52,7 @@ public class Java9OptionalsStreamTest {
public void filterOutPresentOptionalsWithJava9() {
assertEquals(4, listOfOptionals.size());
List<String> filteredList = listOfOptionals.stream()
.flatMap(Optional::stream)
.collect(Collectors.toList());
List<String> filteredList = listOfOptionals.stream().flatMap(Optional::stream).collect(Collectors.toList());
assertEquals(2, filteredList.size());
assertEquals("foo", filteredList.get(0));

7
core-java-9/src/test/java/com/baeldung/java9/MultiResultionImageTest.java
View File

@@ -1,5 +1,5 @@
package com.baeldung.java9;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
@@ -13,7 +13,6 @@ import org.junit.Test;
public class MultiResultionImageTest {
@Test
public void baseMultiResImageTest() {
int baseIndex = 1;
@@ -38,10 +37,8 @@ public class MultiResultionImageTest {
return 8 * (i + 1);
}
private static BufferedImage createImage(int i) {
return new BufferedImage(getSize(i), getSize(i),
BufferedImage.TYPE_INT_RGB);
return new BufferedImage(getSize(i), getSize(i), BufferedImage.TYPE_INT_RGB);
}
}

84
core-java-9/src/test/java/com/baeldung/java9/httpclient/SimpleHttpRequestsTest.java
View File

@@ -1,6 +1,4 @@
package com.baeldung.java9.httpclient;
package com.baeldung.java9.httpclient;
import static java.net.HttpURLConnection.HTTP_OK;
import static org.junit.Assert.assertTrue;
@@ -28,8 +26,8 @@ import org.junit.Test;
public class SimpleHttpRequestsTest {
private URI httpURI;
private URI httpURI;
@Before
public void init() throws URISyntaxException {
httpURI = new URI("http://www.baeldung.com/");
@@ -37,26 +35,26 @@ public class SimpleHttpRequestsTest {
@Test
public void quickGet() throws IOException, InterruptedException, URISyntaxException {
HttpRequest request = HttpRequest.create( httpURI ).GET();
HttpRequest request = HttpRequest.create(httpURI).GET();
HttpResponse response = request.response();
int responseStatusCode = response.statusCode();
String responseBody = response.body(HttpResponse.asString());
assertTrue("Get response status code is bigger then 400", responseStatusCode < 400);
assertTrue("Get response status code is bigger then 400", responseStatusCode < 400);
}
@Test
public void asynchronousGet() throws URISyntaxException, IOException, InterruptedException, ExecutionException{
public void asynchronousGet() throws URISyntaxException, IOException, InterruptedException, ExecutionException {
HttpRequest request = HttpRequest.create(httpURI).GET();
long before = System.currentTimeMillis();
CompletableFuture<HttpResponse> futureResponse = request.responseAsync();
futureResponse.thenAccept( response -> {
futureResponse.thenAccept(response -> {
String responseBody = response.body(HttpResponse.asString());
});
});
HttpResponse resp = futureResponse.get();
HttpHeaders hs = resp.headers();
assertTrue("There should be more then 1 header.", hs.map().size() >1);
assertTrue("There should be more then 1 header.", hs.map().size() > 1);
}
@Test
public void postMehtod() throws URISyntaxException, IOException, InterruptedException {
HttpRequest.Builder requestBuilder = HttpRequest.create(httpURI);
@@ -66,61 +64,63 @@ public class SimpleHttpRequestsTest {
int statusCode = response.statusCode();
assertTrue("HTTP return code", statusCode == HTTP_OK);
}
@Test
public void configureHttpClient() throws NoSuchAlgorithmException, URISyntaxException, IOException, InterruptedException{
public void configureHttpClient() throws NoSuchAlgorithmException, URISyntaxException, IOException, InterruptedException {
CookieManager cManager = new CookieManager();
cManager.setCookiePolicy(CookiePolicy.ACCEPT_ORIGINAL_SERVER);
SSLParameters sslParam = new SSLParameters (new String[] { "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256" }, new String[] { "TLSv1.2" });
SSLParameters sslParam = new SSLParameters(new String[] { "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256" }, new String[] { "TLSv1.2" });
HttpClient.Builder hcBuilder = HttpClient.create();
hcBuilder.cookieManager(cManager).sslContext(SSLContext.getDefault()).sslParameters(sslParam);
HttpClient httpClient = hcBuilder.build();
HttpRequest.Builder reqBuilder = httpClient.request(new URI("https://www.facebook.com"));
HttpRequest request = reqBuilder.followRedirects(HttpClient.Redirect.ALWAYS).GET();
HttpResponse response = request.response();
int statusCode = response.statusCode();
assertTrue("HTTP return code", statusCode == HTTP_OK);
}
SSLParameters getDefaultSSLParameters() throws NoSuchAlgorithmException{
SSLParameters getDefaultSSLParameters() throws NoSuchAlgorithmException {
SSLParameters sslP1 = SSLContext.getDefault().getSupportedSSLParameters();
String [] proto = sslP1.getApplicationProtocols();
String [] cifers = sslP1.getCipherSuites();
String[] proto = sslP1.getApplicationProtocols();
String[] cifers = sslP1.getCipherSuites();
System.out.println(printStringArr(proto));
System.out.println(printStringArr(cifers));
return sslP1;
}
String printStringArr(String ... args ){
if(args == null){
String printStringArr(String... args) {
if (args == null) {
return null;
}
StringBuilder sb = new StringBuilder();
for (String s : args){
for (String s : args) {
sb.append(s);
sb.append("\n");
}
return sb.toString();
}
String printHeaders(HttpHeaders h){
if(h == null){
String printHeaders(HttpHeaders h) {
if (h == null) {
return null;
}
StringBuilder sb = new StringBuilder();
Map<String, List<String>> hMap = h.map();
for(String k : hMap.keySet()){
sb.append(k).append(":");
List<String> l = hMap.get(k);
if( l != null ){
l.forEach( s -> { sb.append(s).append(","); } );
}
sb.append("\n");
}
return sb.toString();
StringBuilder sb = new StringBuilder();
Map<String, List<String>> hMap = h.map();
for (String k : hMap.keySet()) {
sb.append(k).append(":");
List<String> l = hMap.get(k);
if (l != null) {
l.forEach(s -> {
sb.append(s).append(",");
});
}
sb.append("\n");
}
return sb.toString();
}
}

5
core-java-9/src/test/java/com/baeldung/java9/language/TryWithResourcesTest.java
View File

@@ -7,7 +7,7 @@ public class TryWithResourcesTest {
static int closeCount = 0;
static class MyAutoCloseable implements AutoCloseable{
static class MyAutoCloseable implements AutoCloseable {
final FinalWrapper finalWrapper = new FinalWrapper();
public void close() {
@@ -57,7 +57,6 @@ public class TryWithResourcesTest {
assertEquals("Expected and Actual does not match", 5, closeCount);
}
static class CloseableException extends Exception implements AutoCloseable {
@Override
public void close() {
@@ -66,5 +65,3 @@ public class TryWithResourcesTest {
}
}

47
core-java-9/src/test/java/com/baeldung/java9/language/stream/CollectorImprovementTest.java
View File

@@ -12,41 +12,30 @@ public class CollectorImprovementTest {
@Test
public void givenList_whenSatifyPredicate_thenMapValueWithOccurences() {
List<Integer> numbers = List.of(1, 2, 3, 5, 5);
Map<Integer, Long> result = numbers.stream()
.filter(val -> val > 3).collect(Collectors.groupingBy(
Function.identity(), Collectors.counting()));
Map<Integer, Long> result = numbers.stream().filter(val -> val > 3).collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));
assertEquals(1, result.size());
result = numbers.stream().collect(Collectors.groupingBy(
Function.identity(), Collectors.filtering(val -> val > 3,
Collectors.counting())));
result = numbers.stream().collect(Collectors.groupingBy(Function.identity(), Collectors.filtering(val -> val > 3, Collectors.counting())));
assertEquals(4, result.size());
}
@Test
public void givenListOfBlogs_whenAuthorName_thenMapAuthorWithComments() {
Blog blog1 = new Blog("1", "Nice", "Very Nice");
Blog blog2 = new Blog("2", "Disappointing", "Ok", "Could be better");
List<Blog> blogs = List.of(blog1, blog2);
Map<String, List<List<String>>> authorComments1 =
blogs.stream().collect(Collectors.groupingBy(
Blog::getAuthorName, Collectors.mapping(
Blog::getComments, Collectors.toList())));
Map<String, List<List<String>>> authorComments1 = blogs.stream().collect(Collectors.groupingBy(Blog::getAuthorName, Collectors.mapping(Blog::getComments, Collectors.toList())));
assertEquals(2, authorComments1.size());
assertEquals(2, authorComments1.get("1").get(0).size());
assertEquals(3, authorComments1.get("2").get(0).size());
Map<String, List<String>> authorComments2 =
blogs.stream().collect(Collectors.groupingBy(
Blog::getAuthorName, Collectors.flatMapping(
blog -> blog.getComments().stream(),
Collectors.toList())));
Map<String, List<String>> authorComments2 = blogs.stream().collect(Collectors.groupingBy(Blog::getAuthorName, Collectors.flatMapping(blog -> blog.getComments().stream(), Collectors.toList())));
assertEquals(2, authorComments2.size());
assertEquals(2, authorComments2.get("1").size());
assertEquals(3, authorComments2.get("2").size());
@@ -54,18 +43,18 @@ public class CollectorImprovementTest {
}
class Blog {
private String authorName;
private List<String> comments;
private String authorName;
private List<String> comments;
public Blog(String authorName, String... comments) {
this.authorName = authorName;
this.comments = List.of(comments);
}
public String getAuthorName() {
return this.authorName;
}
public List<String> getComments() {
return this.comments;
}

38
core-java-9/src/test/java/com/baeldung/java9/language/stream/StreamFeaturesTest.java
View File

@@ -17,16 +17,11 @@ public class StreamFeaturesTest {
public static class TakeAndDropWhileTest {
public Stream<String> getStreamAfterTakeWhileOperation() {
return Stream
.iterate("", s -> s + "s")
.takeWhile(s -> s.length() < 10);
return Stream.iterate("", s -> s + "s").takeWhile(s -> s.length() < 10);
}
public Stream<String> getStreamAfterDropWhileOperation() {
return Stream
.iterate("", s -> s + "s")
.takeWhile(s -> s.length() < 10)
.dropWhile(s -> !s.contains("sssss"));
return Stream.iterate("", s -> s + "s").takeWhile(s -> s.length() < 10).dropWhile(s -> !s.contains("sssss"));
}
@Test
@@ -72,25 +67,25 @@ public class StreamFeaturesTest {
}
public static class OfNullableTest {
public static class OfNullableTest {
private List<String> collection = Arrays.asList("A", "B", "C");
private Map<String, Integer> map = new HashMap<>() {{
put("A", 10);
put("C", 30);
}};
private Map<String, Integer> map = new HashMap<>() {
{
put("A", 10);
put("C", 30);
}
};
private Stream<Integer> getStreamWithOfNullable() {
return collection.stream()
.flatMap(s -> Stream.ofNullable(map.get(s)));
return collection.stream().flatMap(s -> Stream.ofNullable(map.get(s)));
}
private Stream<Integer> getStream() {
return collection.stream()
.flatMap(s -> {
Integer temp = map.get(s);
return temp != null ? Stream.of(temp) : Stream.empty();
});
return collection.stream().flatMap(s -> {
Integer temp = map.get(s);
return temp != null ? Stream.of(temp) : Stream.empty();
});
}
private List<Integer> testOfNullableFrom(Stream<Integer> stream) {
@@ -107,10 +102,7 @@ public class StreamFeaturesTest {
@Test
public void testOfNullable() {
assertEquals(
testOfNullableFrom(getStream()),
testOfNullableFrom(getStreamWithOfNullable())
);
assertEquals(testOfNullableFrom(getStream()), testOfNullableFrom(getStreamWithOfNullable()));
}

57
core-java-9/src/test/java/com/baeldung/java9/process/ProcessApi.java
View File

@@ -22,90 +22,89 @@ import static org.junit.Assert.assertTrue;
public class ProcessApi {
@Before
public void init() {
}
@Test
public void processInfoExample()throws NoSuchAlgorithmException{
public void processInfoExample() throws NoSuchAlgorithmException {
ProcessHandle self = ProcessHandle.current();
long PID = self.getPid();
ProcessHandle.Info procInfo = self.info();
Optional<String[]> args = procInfo.arguments();
Optional<String> cmd = procInfo.commandLine();
Optional<String> cmd = procInfo.commandLine();
Optional<Instant> startTime = procInfo.startInstant();
Optional<Duration> cpuUsage = procInfo.totalCpuDuration();
waistCPU();
System.out.println("Args "+ args);
System.out.println("Command " +cmd.orElse("EmptyCmd"));
System.out.println("Start time: "+ startTime.get().toString());
System.out.println("Args " + args);
System.out.println("Command " + cmd.orElse("EmptyCmd"));
System.out.println("Start time: " + startTime.get().toString());
System.out.println(cpuUsage.get().toMillis());
Stream<ProcessHandle> allProc = ProcessHandle.current().children();
allProc.forEach(p -> {
System.out.println("Proc "+ p.getPid());
System.out.println("Proc " + p.getPid());
});
}
@Test
public void createAndDestroyProcess() throws IOException, InterruptedException{
public void createAndDestroyProcess() throws IOException, InterruptedException {
int numberOfChildProcesses = 5;
for(int i=0; i < numberOfChildProcesses; i++){
for (int i = 0; i < numberOfChildProcesses; i++) {
createNewJVM(ServiceMain.class, i).getPid();
}
Stream<ProcessHandle> childProc = ProcessHandle.current().children();
assertEquals( childProc.count(), numberOfChildProcesses);
Stream<ProcessHandle> childProc = ProcessHandle.current().children();
assertEquals(childProc.count(), numberOfChildProcesses);
childProc = ProcessHandle.current().children();
childProc.forEach(processHandle -> {
assertTrue("Process "+ processHandle.getPid() +" should be alive!", processHandle.isAlive());
assertTrue("Process " + processHandle.getPid() + " should be alive!", processHandle.isAlive());
CompletableFuture<ProcessHandle> onProcExit = processHandle.onExit();
onProcExit.thenAccept(procHandle -> {
System.out.println("Process with PID "+ procHandle.getPid() + " has stopped");
System.out.println("Process with PID " + procHandle.getPid() + " has stopped");
});
});
Thread.sleep(10000);
childProc = ProcessHandle.current().children();
childProc.forEach(procHandle -> {
assertTrue("Could not kill process "+procHandle.getPid(), procHandle.destroy());
assertTrue("Could not kill process " + procHandle.getPid(), procHandle.destroy());
});
Thread.sleep(5000);
childProc = ProcessHandle.current().children();
childProc.forEach(procHandle -> {
assertFalse("Process "+ procHandle.getPid() +" should not be alive!", procHandle.isAlive());
assertFalse("Process " + procHandle.getPid() + " should not be alive!", procHandle.isAlive());
});
}
private Process createNewJVM(Class mainClass, int number) throws IOException{
private Process createNewJVM(Class mainClass, int number) throws IOException {
ArrayList<String> cmdParams = new ArrayList<String>(5);
cmdParams.add(ProcessUtils.getJavaCmd().getAbsolutePath());
cmdParams.add("-cp");
cmdParams.add(ProcessUtils.getClassPath());
cmdParams.add(mainClass.getName());
cmdParams.add("Service "+ number);
cmdParams.add("Service " + number);
ProcessBuilder myService = new ProcessBuilder(cmdParams);
myService.inheritIO();
return myService.start();
}
private void waistCPU() throws NoSuchAlgorithmException{
private void waistCPU() throws NoSuchAlgorithmException {
ArrayList<Integer> randArr = new ArrayList<Integer>(4096);
SecureRandom sr = SecureRandom.getInstanceStrong();
Duration somecpu = Duration.ofMillis(4200L);
Instant end = Instant.now().plus(somecpu);
while (Instant.now().isBefore(end)) {
//System.out.println(sr.nextInt());
randArr.add( sr.nextInt() );
// System.out.println(sr.nextInt());
randArr.add(sr.nextInt());
}
}