新增文件

src/main/java/osc/git/eh3/annotation/PkgAnnotation.java

@@ -0,0 +1,19 @@
+/**
+ * 
+ */
+package osc.git.eh3.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author lixiangrong
+ *
+ */
+@Target(ElementType.PACKAGE)
+@Retention(RetentionPolicy.RUNTIME)
+@interface PkgAnnotation {
+
+}

src/main/java/osc/git/eh3/annotation/TestPkgAnnotation.java

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+package osc.git.eh3.annotation;
+
+import java.lang.annotation.Annotation;
+
+public class TestPkgAnnotation {
+
+	public static void main(String[] args) {
+		Package pkg = Package.getPackage("osc.git.eh3.annotation");
+		Annotation[] annotations = pkg.getAnnotations();
+		for (Annotation annotation : annotations) {
+			System.out.println(annotation);
+		}
+
+		// ===========================友好类和包内访问常量==============
+		new MyPackageMethod().myPackageMethod();
+		System.out.println(MyPackageConst.PACKAGE_STRING);
+	}
+}

src/main/java/osc/git/eh3/annotation/package-info.java

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+/**
+ * 
+ */
+/**
+ * @author lixiangrong
+ *
+ */
+@PkgAnnotation
+package osc.git.eh3.annotation;
+
+/**
+ * 包内方法
+ */
+class MyPackageMethod {
+	public void myPackageMethod() {
+		System.out.println("MyPackageMethod...");
+	}
+}
+
+/**
+ * 包内常量
+ */
+class MyPackageConst {
+	static final java.lang.String PACKAGE_STRING = "myPackageConst";
+}