Example: TestCanRuntimeVisibleAnnotations3

Test directive .annotation visible

 

/* TestCanAnnotation2.java */ 

import java.lang.annotation.*;

@Retention(value = RetentionPolicy.RUNTIME)
@Target(value = { ElementType.ANNOTATION_TYPE,
                  ElementType.CONSTRUCTOR,
                  ElementType.FIELD,
                  ElementType.LOCAL_VARIABLE,
                  ElementType.METHOD,
                  ElementType.PACKAGE,
                  ElementType.PARAMETER,
                  ElementType.TYPE 
                })

public @interface TestCanAnnotation2 {
  
  enum Direction { NORTH, SOUTH, WEST, EAST };
  Direction value1();
  
  Class value2();
  Class<? extends Number>[] value3();
}

 

/* TestCanRuntimeVisibleAnnotations3.java */ 


@TestCanAnnotation2(value1 = TestCanAnnotation2.Direction.NORTH,
                      value2 = Object.class,
                      value3 = { Byte.class, Integer.class }
                     )
public class TestCanRuntimeVisibleAnnotations3 {

  
  @TestCanAnnotation2(value1 = TestCanAnnotation2.Direction.SOUTH,
                        value2 = String.class,
                        value3 = { Float.class, Double.class }
                       )
  String str = "Hello";

  
  @TestCanAnnotation2(value1 = TestCanAnnotation2.Direction.WEST,
                        value2 = StringBuffer.class,
                        value3 = { java.math.BigInteger.class }
                       )
  public void method1(String s) {
    System.out.println(str + s);
  }
  
  
  public static void main(String[] args) {
    TestCanRuntimeVisibleAnnotations3 tcrva = 
            new TestCanRuntimeVisibleAnnotations3(); 
    tcrva.method1(" Java!");
  }
}

 

> javac TestCanAnnotation2.java
> javac TestCanRuntimeVisibleAnnotations3.java

> java ClassFileAnalyzer TestCanAnnotation2.class
> java ClassFileAnalyzer TestCanRuntimeVisibleAnnotations3.class

 

; TestCanAnnotation2.j

; Generated by ClassFileAnalyzer (Can)
; Analyzer and Disassembler for Java class files
; (Jasmin syntax 2, http://jasmin.sourceforge.net)
;
; ClassFileAnalyzer, version 0.7.0 


.bytecode 50.0
.source TestCanAnnotation2.java
.interface public abstract annotation TestCanAnnotation2
; Flag ACC_SUPER not set, see JVM spec

.super java/lang/Object
.implements java/lang/annotation/Annotation
.annotation visible Ljava/lang/annotation/Retention;
  value e Ljava/lang/annotation/RetentionPolicy; = RUNTIME
  .end annotation
.annotation visible Ljava/lang/annotation/Target;
  ; one line
  value [e Ljava/lang/annotation/ElementType; = ANNOTATION_TYPE CONSTRUCTOR
          FIELD LOCAL_VARIABLE METHOD PACKAGE PARAMETER TYPE
  .end annotation
; one line
.inner class public static final enum Direction
        inner TestCanAnnotation2$Direction outer TestCanAnnotation2

.method public abstract value1()LTestCanAnnotation2$Direction;
.end method

.method public abstract value2()Ljava/lang/Class;
.end method

.method public abstract value3()[Ljava/lang/Class;
  .signature "()[Ljava/lang/Class<+Ljava/lang/Number;>;"
.end method

 

; TestCanRuntimeVisibleAnnotations3.j

; Generated by ClassFileAnalyzer (Can)
; Analyzer and Disassembler for Java class files
; (Jasmin syntax 2, http://jasmin.sourceforge.net)
;
; ClassFileAnalyzer, version 0.7.0 


.bytecode 50.0
.source TestCanRuntimeVisibleAnnotations3.java
.class public TestCanRuntimeVisibleAnnotations3
.super java/lang/Object
.annotation visible LTestCanAnnotation2;
  value1 e LTestCanAnnotation2$Direction; = NORTH
  value2 c = Ljava/lang/Object;
  value3 [c = Ljava/lang/Byte; Ljava/lang/Integer;
  .end annotation
; one line
.inner class public static final enum Direction
        inner TestCanAnnotation2$Direction
        outer TestCanAnnotation2

.field str Ljava/lang/String;
  .annotation visible LTestCanAnnotation2;
    value1 e LTestCanAnnotation2$Direction; = SOUTH
    value2 c = Ljava/lang/String;
    value3 [c = Ljava/lang/Float; Ljava/lang/Double;
    .end annotation
  .end field

.method public <init>()V
  .limit stack 2
  .limit locals 1
  .line 8
  0: aload_0
  1: invokespecial java/lang/Object/<init>()V
  .line 11
  4: aload_0
  5: ldc "Hello"
  7: putfield TestCanRuntimeVisibleAnnotations3/str Ljava/lang/String;
  10: return
.end method

.method public method1(Ljava/lang/String;)V
  .limit stack 3
  .limit locals 2
  .line 23
  0: getstatic java/lang/System/out Ljava/io/PrintStream;
  3: new java/lang/StringBuilder
  6: dup
  7: invokespecial java/lang/StringBuilder/<init>()V
  10: aload_0
  11: getfield TestCanRuntimeVisibleAnnotations3/str Ljava/lang/String;
  ; one line
  14: invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)
      Ljava/lang/StringBuilder;
  17: aload_1
  ; one line
  18: invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)
      Ljava/lang/StringBuilder;
  21: invokevirtual java/lang/StringBuilder/toString()Ljava/lang/String;
  24: invokevirtual java/io/PrintStream/println(Ljava/lang/String;)V
  .line 24
  27: return
  .annotation visible LTestCanAnnotation2;
    value1 e LTestCanAnnotation2$Direction; = WEST
    value2 c = Ljava/lang/StringBuffer;
    value3 [c = Ljava/math/BigInteger;
    .end annotation
.end method

.method public static main([Ljava/lang/String;)V
  .limit stack 2
  .limit locals 2
  .line 28
  0: new TestCanRuntimeVisibleAnnotations3
  3: dup
  4: invokespecial TestCanRuntimeVisibleAnnotations3/<init>()V
  7: astore_1
  .line 30
  8: aload_1
  9: ldc " Java!"
  11: invokevirtual TestCanRuntimeVisibleAnnotations3/method1(Ljava/lang/String;)V
  .line 31
  14: return
.end method