java 8 与 java 7 ， 包 与 类 新增和删除的对比

java8 新增：

java.time
java.util.function
java.util.stream
com.sun.source.doctree
com.sun.org.apache.xml.internal.security.signature.reference

java.beans.MethodRef.java
java.io.DefaultFileSystem.java
java.io.UncheckedIOException.java
java.lang.FunctionalInterface.java
java.net.HostPortrange.java
java.net.HttpConnectSocketImpl.java
java.net.InetAddressContainer.java
java.net.package-info.java
java.net.URLPermission.java
java.nio.CharBufferSpliterator.java
java.security.DomainLoadStoreParameter.java
java.security.package-info.java
java.security.PKCS12Attribute.java
java.sql.DriverAction.java
java.sql.JDBCType.java
java.sql.SQLType.java
java.util.ArrayPrefixHelpers.java
java.util.ArraysParallelSortHelpers.java
java.util.Base64.java
java.util.Comparators.java
java.util.DoubleSummaryStatistics.java
java.util.IntSummaryStatistics.java
java.util.LongSummaryStatistics.java
java.util.Optional.java
java.util.OptionalDouble.java
java.util.OptionalInt.java
java.util.OptionalLong.java
java.util.PrimitiveIterator.java
java.util.Spliterator.java
java.util.Spliterators.java
java.util.SplittableRandom.java
java.util.StringJoiner.java
java.util.Tripwire.java
javax.tools.DocumentationTool.java
com.sun.javadoc.AnnotatedType.java
com.sun.javadoc.package-info.java
java.lang.annotation.Native.java
java.lang.annotation.Repeatable.java
java.lang.invoke.AbstractValidatingLambdaMetafactory.java
java.lang.invoke.InfoFromMemberName.java
java.lang.invoke.InnerClassLambdaMetafactory.java
java.lang.invoke.LambdaConversionException.java
java.lang.invoke.LambdaMetafactory.java
java.lang.invoke.ProxyClassesDumper.java
java.lang.invoke.SerializedLambda.java
java.lang.invoke.Stable.java
java.lang.invoke.TypeConvertingMethodAdapter.java
java.lang.reflect.AnnotatedArrayType.java
java.lang.reflect.AnnotatedParameterizedType.java
java.lang.reflect.AnnotatedType.java
java.lang.reflect.AnnotatedTypeVariable.java
java.lang.reflect.AnnotatedWildcardType.java
java.lang.reflect.Executable.java
java.lang.reflect.MalformedParametersException.java
java.lang.reflect.Parameter.java
java.lang.reflect.WeakCache.java
java.nio.file.FileTreeIterator.java
java.security.acl.package-info.java
java.security.cert.CertPathChecker.java
java.security.cert.package-info.java
java.security.cert.PKIXRevocationChecker.java
java.security.interfaces.package-info.java
java.security.spec.DSAGenParameterSpec.java
java.security.spec.package-info.java
java.util.concurrent.CompletableFuture.java
java.util.concurrent.CompletionException.java
java.util.concurrent.CompletionStage.java
java.util.concurrent.CountedCompleter.java
java.util.spi.CalendarDataProvider.java
java.util.spi.CalendarNameProvider.java
java.util.spi.ResourceBundleControlProvider.java
java.util.zip.ZipUtils.java
javax.lang.model.AnnotatedConstruct.java
javax.management.timer.TimerAlarmClock.java
javax.rmi.CORBA.ClassDesc.java
javax.rmi.CORBA.GetORBPropertiesFileAction.java
javax.rmi.CORBA.PortableRemoteObjectDelegate.java
javax.rmi.CORBA.Stub.java
javax.rmi.CORBA.StubDelegate.java
javax.rmi.CORBA.Tie.java
javax.rmi.CORBA.Util.java
javax.security.auth.package-info.java
javax.security.cert.package-info.java
javax.security.sasl.package-info.java
javax.xml.validation.SchemaFactoryConfigurationError.java
com.sun.jmx.snmp.SnmpPermission.java
com.sun.security.auth.package-info.java
com.sun.security.jgss.ExtendedGSSCredential.java
com.sun.security.jgss.package-info.java
com.sun.source.tree.AnnotatedTypeTree.java
com.sun.source.tree.IntersectionTypeTree.java
com.sun.source.tree.LambdaExpressionTree.java
com.sun.source.tree.MemberReferenceTree.java
com.sun.source.util.DocSourcePositions.java
com.sun.source.util.DocTreePath.java
com.sun.source.util.DocTreePathScanner.java
com.sun.source.util.DocTrees.java
com.sun.source.util.DocTreeScanner.java
com.sun.source.util.Plugin.java
com.sun.source.util.SimpleDocTreeVisitor.java
java.util.concurrent.atomic.DoubleAccumulator.java
java.util.concurrent.atomic.DoubleAdder.java
java.util.concurrent.atomic.LongAccumulator.java
java.util.concurrent.atomic.LongAdder.java
java.util.concurrent.atomic.Striped64.java
java.util.concurrent.locks.StampedLock.java
javax.lang.model.type.IntersectionType.java
javax.lang.model.util.AbstractAnnotationValueVisitor8.java
javax.lang.model.util.AbstractElementVisitor8.java
javax.lang.model.util.AbstractTypeVisitor8.java
javax.lang.model.util.ElementKindVisitor8.java
javax.lang.model.util.ElementScanner8.java
javax.lang.model.util.SimpleAnnotationValueVisitor8.java
javax.lang.model.util.SimpleElementVisitor8.java
javax.lang.model.util.SimpleTypeVisitor8.java
javax.lang.model.util.TypeKindVisitor8.java
javax.security.auth.callback.package-info.java
javax.security.auth.kerberos.package-info.java
javax.security.auth.login.package-info.java
javax.security.auth.spi.package-info.java
javax.security.auth.x500.package-info.java
com.sun.imageio.plugins.bmp.BMPCompressionTypes.java
com.sun.jmx.snmp.agent.AcmChecker.java
com.sun.jmx.snmp.agent.LongList.java
com.sun.security.auth.callback.package-info.java
com.sun.security.auth.login.package-info.java
com.sun.security.auth.module.package-info.java
com.sun.corba.se.impl.util.IdentityHashtableEntry.java
com.sun.org.apache.xalan.internal.utils.FeatureManager.java
com.sun.org.apache.xalan.internal.utils.FeaturePropertyBase.java
com.sun.org.apache.xalan.internal.utils.XMLSecurityManager.java
com.sun.org.apache.xerces.internal.utils.XMLLimitAnalyzer.java
com.sun.org.apache.xerces.internal.utils.XMLSecurityManager.java
com.sun.org.apache.xml.internal.security.encryption.AbstractSerializer.java
com.sun.org.apache.xml.internal.security.encryption.DocumentSerializer.java
com.sun.org.apache.xml.internal.security.encryption.Serializer.java
com.sun.org.apache.xml.internal.security.utils.ClassLoaderUtils.java
com.sun.org.apache.xml.internal.security.utils.DOMNamespaceContext.java
com.sun.org.apache.xml.internal.security.utils.JDKXPathAPI.java
com.sun.org.apache.xml.internal.security.utils.JDKXPathFactory.java
com.sun.org.apache.xml.internal.security.utils.Signature11ElementProxy.java
com.sun.org.apache.xml.internal.security.utils.XalanXPathAPI.java
com.sun.org.apache.xml.internal.security.utils.XalanXPathFactory.java
com.sun.org.apache.xml.internal.security.utils.XPathAPI.java
com.sun.org.apache.xml.internal.security.utils.XPathFactory.java
com.sun.org.apache.xml.internal.serializer.utils.SerializerMessages_pt_BR.java
com.sun.org.apache.xml.internal.security.c14n.implementations.CanonicalizerPhysical.java
com.sun.org.apache.xml.internal.security.keys.content.DEREncodedKeyValue.java
com.sun.org.apache.xml.internal.security.keys.content.KeyInfoReference.java
com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverContext.java
com.sun.org.apache.xml.internal.security.keys.content.x509.XMLX509Digest.java
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations.DEREncodedKeyValueResolver.java
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations.KeyInfoReferenceResolver.java
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations.PrivateKeyResolver.java
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations.SecretKeyResolver.java
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations.SingleKeyResolver.java
com.sun.org.apache.xml.internal.security.keys.keyresolver.implementations.X509DigestResolver.java

java8 删除：

sunw
com.sun.mirror
com.sun.jmx.trace

java.io.Win32FileSystem.java
java.net.NetUtil.java
java.text.BreakDictionary.java
java.text.CollationRules.java
java.text.DictionaryBasedBreakIterator.java
java.text.RuleBasedBreakIterator.java
java.util.XMLUtils.java
java.lang.invoke.InvokeGeneric.java
com.sun.security.auth.PolicyParser.java
com.sun.security.auth.SubjectCodeSource.java
com.sun.org.apache.bcel.internal.util.Objects.java
com.sun.org.apache.xalan.internal.utils.Objects.java
com.sun.org.apache.xerces.internal.utils.Objects.java
com.sun.org.apache.xml.internal.security.utils.CachedXPathAPIHolder.java
com.sun.org.apache.xml.internal.security.utils.CachedXPathFuncHereAPI.java
com.sun.org.apache.xml.internal.security.utils.XPathFuncHereAPI.java
com.sun.org.apache.xml.internal.security.transforms.implementations.FuncHereContext.java

对比方法：

下载jdk7 和jdk8 ，解压其中的src.zip文件，分别放在 D:\\tmp\\java7 和 D:\\tmp\\java8 下面

使用如下代码进行处理（jdk8编译运行）：

package test;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Arrays;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.HashMap;

public class DifferCheck {
	public static void main(String[] args) throws IOException {
		// 比较
		File java7 = new File("D:\\tmp\\java7");
		File java8 = new File("D:\\tmp\\java8");
		// 声明时自动识别类型
		Pair<File, File> root = new Pair<>(java7, java8);
		Queue<Pair<File, File>> queue = new LinkedList<>();
		queue.add(root);
		List<File> removed = new LinkedList<>();
		List<File> add = new LinkedList<>();
		while (!queue.isEmpty()) {
			Pair<File, File> p = queue.poll();
			File j7dir = p.getFirst();
			File j8dir = p.getSecond();
			if (j7dir.isDirectory()) {
				List<File> j7files = Arrays.asList(j7dir.listFiles());
				List<File> j8files = Arrays.asList(j8dir.listFiles());
				Map<String, File> j7names = getFileNames(j7files);
				Map<String, File> j8names = getFileNames(j8files);
				j7files.forEach(j7file -> {
					if (!j8names.containsKey(j7file.getName())) {
						removed.add(j7file);
					} else {
						queue.add(new Pair<File, File>(j7file, j8names
								.get(j7file.getName())));
					}

				});
				j8files.forEach(j8file -> {
					if (!j7names.containsKey(j8file.getName())) {
						add.add(j8file);
					}
				});
			}
		}
		Comparator<File> c = (a, b) -> {
			if (a.getName().endsWith(".java")) {
				if (b.getName().endsWith(".java")) {
					return 0;
				}
				return 1;
			}
			if (b.getName().endsWith(".java")) {
				return -1;
			}
			return 0;

		};
		add.sort(c);
		removed.sort(c);
		// 写文件
		File addFiles = new File("D:\\tmp\\add.txt");
		File removeFiles = new File("D:\\tmp\\remove.txt");
		if (addFiles.exists()) {
			addFiles.delete();
		}
		if (removeFiles.exists()) {
			removeFiles.delete();
		}
		FileWriter aw = new FileWriter(addFiles);
		FileWriter rw = new FileWriter(removeFiles);
		// 不需要加final修饰符，可能是编译器处理
		int la = "D:\\tmp\\java8\\".length();
		add.forEach(file -> {
			try {
				aw.write(file.getCanonicalPath().substring(la)
						.replace('\\', '.')
						+ "\n");
			} catch (Exception e) {
				e.printStackTrace();
			}
		});
		int lr = "D:\\tmp\\java7\\".length();
		removed.forEach(file -> {
			try {
				rw.write(file.getCanonicalPath().substring(lr)
						.replace('\\', '.')
						+ "\n");
			} catch (Exception e) {
				e.printStackTrace();
			}
		});
		aw.close();
		rw.close();
	}

	private static Map<String, File> getFileNames(List<File> files) {
		Map<String, File> map = new HashMap<>();
		files.forEach(file -> {
			map.put(file.getName(), file);
		});
		return map;
	}

	static class Pair<T, R> {
		private T t;
		private R r;

		public Pair(T t, R r) {
			this.t = t;
			this.r = r;
		}

		public T getFirst() {
			return t;
		}

		public void setFrist(T t) {
			this.t = t;
		}

		public R getSecond() {
			return r;
		}

		public void setSecond(R r) {
			this.r = r;
		}
	}
}