http://cobertura.sourceforge.net: Cobertura is a free Java tool that calculates the percentage of code accessed by tests. It can be used to identify which parts of your Java program are lacking test coverage. It is based on jcoverage.
  • Steven Christou 
public class net.sourceforge.cobertura.util.Source
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: net.sourceforge.cobertura.util.Source
  super_class: java.lang.Object
{
  private java.io.InputStream is;
    descriptor: Ljava/io/InputStream;
    flags: (0x0002) ACC_PRIVATE

  private java.lang.Object streamOrigin;
    descriptor: Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE

  private static org.slf4j.Logger LOGGER;
    descriptor: Lorg/slf4j/Logger;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 40
            ldc Lnet/sourceforge/cobertura/util/Source;
            invokestatic org.slf4j.LoggerFactory.getLogger:(Ljava/lang/Class;)Lorg/slf4j/Logger;
            putstatic net.sourceforge.cobertura.util.Source.LOGGER:Lorg/slf4j/Logger;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(java.io.InputStream, java.lang.Object);
    descriptor: (Ljava/io/InputStream;Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // net.sourceforge.cobertura.util.Source this
        start local 1 // java.io.InputStream is
        start local 2 // java.lang.Object streamOrigin
         0: .line 42
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 43
            aload 0 /* this */
            aload 1 /* is */
            putfield net.sourceforge.cobertura.util.Source.is:Ljava/io/InputStream;
         2: .line 44
            aload 0 /* this */
            aload 2 /* streamOrigin */
            putfield net.sourceforge.cobertura.util.Source.streamOrigin:Ljava/lang/Object;
         3: .line 45
            return
        end local 2 // java.lang.Object streamOrigin
        end local 1 // java.io.InputStream is
        end local 0 // net.sourceforge.cobertura.util.Source this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    4     0          this  Lnet/sourceforge/cobertura/util/Source;
            0    4     1            is  Ljava/io/InputStream;
            0    4     2  streamOrigin  Ljava/lang/Object;
    MethodParameters:
              Name  Flags
      is            
      streamOrigin  

  public java.io.InputStream getInputStream();
    descriptor: ()Ljava/io/InputStream;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // net.sourceforge.cobertura.util.Source this
         0: .line 48
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.is:Ljava/io/InputStream;
            areturn
        end local 0 // net.sourceforge.cobertura.util.Source this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lnet/sourceforge/cobertura/util/Source;

  public void close();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // net.sourceforge.cobertura.util.Source this
         0: .line 58
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.is:Ljava/io/InputStream;
            invokevirtual java.io.InputStream.close:()V
         1: .line 59
            goto 6
      StackMap locals:
      StackMap stack: java.lang.Throwable
         2: astore 1 /* t */
        start local 1 // java.lang.Throwable t
         3: .line 60
            getstatic net.sourceforge.cobertura.util.Source.LOGGER:Lorg/slf4j/Logger;
            new java.lang.StringBuilder
            dup
            ldc "Failure closing input stream for "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual net.sourceforge.cobertura.util.Source.getOriginDesc:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         4: .line 61
            aload 1 /* t */
         5: .line 60
            invokeinterface org.slf4j.Logger.warn:(Ljava/lang/String;Ljava/lang/Throwable;)V
        end local 1 // java.lang.Throwable t
         6: .line 64
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.streamOrigin:Ljava/lang/Object;
            instanceof java.util.zip.ZipFile
            ifeq 11
         7: .line 66
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.streamOrigin:Ljava/lang/Object;
            checkcast java.util.zip.ZipFile
            invokevirtual java.util.zip.ZipFile.close:()V
         8: .line 67
            goto 11
      StackMap locals:
      StackMap stack: java.lang.Throwable
         9: astore 1 /* t */
        start local 1 // java.lang.Throwable t
        10: .line 68
            getstatic net.sourceforge.cobertura.util.Source.LOGGER:Lorg/slf4j/Logger;
            new java.lang.StringBuilder
            dup
            ldc "Failure closing "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            invokevirtual net.sourceforge.cobertura.util.Source.getOriginDesc:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 1 /* t */
            invokeinterface org.slf4j.Logger.warn:(Ljava/lang/String;Ljava/lang/Throwable;)V
        end local 1 // java.lang.Throwable t
        11: .line 71
      StackMap locals:
      StackMap stack:
            return
        end local 0 // net.sourceforge.cobertura.util.Source this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   12     0  this  Lnet/sourceforge/cobertura/util/Source;
            3    6     1     t  Ljava/lang/Throwable;
           10   11     1     t  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           0     1       2  Class java.lang.Throwable
           7     8       9  Class java.lang.Throwable

  public java.lang.String getOriginDesc();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=1
        start local 0 // net.sourceforge.cobertura.util.Source this
         0: .line 74
            ldc ""
            astore 1 /* ret */
        start local 1 // java.lang.String ret
         1: .line 76
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.streamOrigin:Ljava/lang/Object;
            instanceof java.io.File
            ifeq 4
         2: .line 77
            new java.lang.StringBuilder
            dup
            ldc "file "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.streamOrigin:Ljava/lang/Object;
            checkcast java.io.File
            invokevirtual java.io.File.getAbsolutePath:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ret */
         3: .line 78
            goto 5
         4: .line 79
      StackMap locals: java.lang.String
      StackMap stack:
            new java.lang.StringBuilder
            dup
            ldc "archive "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield net.sourceforge.cobertura.util.Source.streamOrigin:Ljava/lang/Object;
            checkcast java.util.zip.ZipFile
            invokevirtual java.util.zip.ZipFile.getName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 1 /* ret */
         5: .line 81
      StackMap locals:
      StackMap stack:
            aload 1 /* ret */
            areturn
        end local 1 // java.lang.String ret
        end local 0 // net.sourceforge.cobertura.util.Source this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lnet/sourceforge/cobertura/util/Source;
            1    6     1   ret  Ljava/lang/String;
}
SourceFile: "Source.java"