https://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
public final class org.apache.lucene.util.CommandLineUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.lucene.util.CommandLineUtil
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.lucene.util.CommandLineUtil this
         0: .line 35
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 37
            return
        end local 0 // org.apache.lucene.util.CommandLineUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/lucene/util/CommandLineUtil;

  public static org.apache.lucene.store.FSDirectory newFSDirectory(java.lang.String, java.nio.file.Path);
    descriptor: (Ljava/lang/String;Ljava/nio/file/Path;)Lorg/apache/lucene/store/FSDirectory;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // java.lang.String clazzName
        start local 1 // java.nio.file.Path path
         0: .line 46
            aload 0 /* clazzName */
            aload 1 /* path */
            invokestatic org.apache.lucene.store.FSLockFactory.getDefault:()Lorg/apache/lucene/store/FSLockFactory;
            invokestatic org.apache.lucene.util.CommandLineUtil.newFSDirectory:(Ljava/lang/String;Ljava/nio/file/Path;Lorg/apache/lucene/store/LockFactory;)Lorg/apache/lucene/store/FSDirectory;
            areturn
        end local 1 // java.nio.file.Path path
        end local 0 // java.lang.String clazzName
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  clazzName  Ljava/lang/String;
            0    1     1       path  Ljava/nio/file/Path;
    MethodParameters:
           Name  Flags
      clazzName  
      path       

  public static org.apache.lucene.store.FSDirectory newFSDirectory(java.lang.String, java.nio.file.Path, org.apache.lucene.store.LockFactory);
    descriptor: (Ljava/lang/String;Ljava/nio/file/Path;Lorg/apache/lucene/store/LockFactory;)Lorg/apache/lucene/store/FSDirectory;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=4, args_size=3
        start local 0 // java.lang.String clazzName
        start local 1 // java.nio.file.Path path
        start local 2 // org.apache.lucene.store.LockFactory lf
         0: .line 58
            aload 0 /* clazzName */
            invokestatic org.apache.lucene.util.CommandLineUtil.loadFSDirectoryClass:(Ljava/lang/String;)Ljava/lang/Class;
            astore 3 /* clazz */
        start local 3 // java.lang.Class clazz
         1: .line 59
            aload 3 /* clazz */
            aload 1 /* path */
            aload 2 /* lf */
            invokestatic org.apache.lucene.util.CommandLineUtil.newFSDirectory:(Ljava/lang/Class;Ljava/nio/file/Path;Lorg/apache/lucene/store/LockFactory;)Lorg/apache/lucene/store/FSDirectory;
         2: areturn
        end local 3 // java.lang.Class clazz
         3: .line 60
      StackMap locals:
      StackMap stack: java.lang.ClassNotFoundException
            astore 3 /* e */
        start local 3 // java.lang.ClassNotFoundException e
         4: .line 61
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc Lorg/apache/lucene/store/FSDirectory;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
         5: .line 62
            ldc " implementation not found: "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* clazzName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 3 /* e */
         6: .line 61
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.lang.ClassNotFoundException e
         7: .line 63
      StackMap locals:
      StackMap stack: java.lang.ClassCastException
            astore 3 /* e */
        start local 3 // java.lang.ClassCastException e
         8: .line 64
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* clazzName */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " is not a "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc Lorg/apache/lucene/store/FSDirectory;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         9: .line 65
            ldc " implementation"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 3 /* e */
        10: .line 64
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.lang.ClassCastException e
        11: .line 66
      StackMap locals:
      StackMap stack: java.lang.NoSuchMethodException
            astore 3 /* e */
        start local 3 // java.lang.NoSuchMethodException e
        12: .line 67
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            aload 0 /* clazzName */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " constructor with "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        13: .line 68
            ldc Ljava/nio/file/Path;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " as parameter not found"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 3 /* e */
        14: .line 67
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.lang.NoSuchMethodException e
        15: .line 69
      StackMap locals:
      StackMap stack: java.lang.Exception
            astore 3 /* e */
        start local 3 // java.lang.Exception e
        16: .line 70
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Error creating "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* clazzName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc " instance"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 3 /* e */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.lang.Exception e
        end local 2 // org.apache.lucene.store.LockFactory lf
        end local 1 // java.nio.file.Path path
        end local 0 // java.lang.String clazzName
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   17     0  clazzName  Ljava/lang/String;
            0   17     1       path  Ljava/nio/file/Path;
            0   17     2         lf  Lorg/apache/lucene/store/LockFactory;
            1    3     3      clazz  Ljava/lang/Class<+Lorg/apache/lucene/store/FSDirectory;>;
            4    7     3          e  Ljava/lang/ClassNotFoundException;
            8   11     3          e  Ljava/lang/ClassCastException;
           12   15     3          e  Ljava/lang/NoSuchMethodException;
           16   17     3          e  Ljava/lang/Exception;
      Exception table:
        from    to  target  type
           0     2       3  Class java.lang.ClassNotFoundException
           0     2       7  Class java.lang.ClassCastException
           0     2      11  Class java.lang.NoSuchMethodException
           0     2      15  Class java.lang.Exception
    MethodParameters:
           Name  Flags
      clazzName  
      path       
      lf         

  public static java.lang.Class<? extends org.apache.lucene.store.Directory> loadDirectoryClass(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/Class;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.String clazzName
         0: .line 82
            aload 0 /* clazzName */
            invokestatic org.apache.lucene.util.CommandLineUtil.adjustDirectoryClassName:(Ljava/lang/String;)Ljava/lang/String;
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            ldc Lorg/apache/lucene/store/Directory;
            invokevirtual java.lang.Class.asSubclass:(Ljava/lang/Class;)Ljava/lang/Class;
            areturn
        end local 0 // java.lang.String clazzName
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  clazzName  Ljava/lang/String;
    Exceptions:
      throws java.lang.ClassNotFoundException
    Signature: (Ljava/lang/String;)Ljava/lang/Class<+Lorg/apache/lucene/store/Directory;>;
    MethodParameters:
           Name  Flags
      clazzName  

  public static java.lang.Class<? extends org.apache.lucene.store.FSDirectory> loadFSDirectoryClass(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/Class;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.String clazzName
         0: .line 93
            aload 0 /* clazzName */
            invokestatic org.apache.lucene.util.CommandLineUtil.adjustDirectoryClassName:(Ljava/lang/String;)Ljava/lang/String;
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            ldc Lorg/apache/lucene/store/FSDirectory;
            invokevirtual java.lang.Class.asSubclass:(Ljava/lang/Class;)Ljava/lang/Class;
            areturn
        end local 0 // java.lang.String clazzName
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  clazzName  Ljava/lang/String;
    Exceptions:
      throws java.lang.ClassNotFoundException
    Signature: (Ljava/lang/String;)Ljava/lang/Class<+Lorg/apache/lucene/store/FSDirectory;>;
    MethodParameters:
           Name  Flags
      clazzName  

  private static java.lang.String adjustDirectoryClassName(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // java.lang.String clazzName
         0: .line 97
            aload 0 /* clazzName */
            ifnull 1
            aload 0 /* clazzName */
            invokevirtual java.lang.String.trim:()Ljava/lang/String;
            invokevirtual java.lang.String.length:()I
            ifne 4
         1: .line 98
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "The "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc Lorg/apache/lucene/store/FSDirectory;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         2: .line 99
            ldc " implementation must not be null or empty"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         3: .line 98
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 102
      StackMap locals:
      StackMap stack:
            aload 0 /* clazzName */
            ldc "."
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            iconst_m1
            if_icmpne 6
         5: .line 103
            new java.lang.StringBuilder
            dup
            ldc Lorg/apache/lucene/store/Directory;
            invokevirtual java.lang.Class.getPackage:()Ljava/lang/Package;
            invokevirtual java.lang.Package.getName:()Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc "."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 0 /* clazzName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 0 /* clazzName */
         6: .line 105
      StackMap locals:
      StackMap stack:
            aload 0 /* clazzName */
            areturn
        end local 0 // java.lang.String clazzName
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    7     0  clazzName  Ljava/lang/String;
    MethodParameters:
           Name  Flags
      clazzName  

  public static org.apache.lucene.store.FSDirectory newFSDirectory(java.lang.Class<? extends org.apache.lucene.store.FSDirectory>, java.nio.file.Path);
    descriptor: (Ljava/lang/Class;Ljava/nio/file/Path;)Lorg/apache/lucene/store/FSDirectory;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // java.lang.Class clazz
        start local 1 // java.nio.file.Path path
         0: .line 120
            aload 0 /* clazz */
            aload 1 /* path */
            invokestatic org.apache.lucene.store.FSLockFactory.getDefault:()Lorg/apache/lucene/store/FSLockFactory;
            invokestatic org.apache.lucene.util.CommandLineUtil.newFSDirectory:(Ljava/lang/Class;Ljava/nio/file/Path;Lorg/apache/lucene/store/LockFactory;)Lorg/apache/lucene/store/FSDirectory;
            areturn
        end local 1 // java.nio.file.Path path
        end local 0 // java.lang.Class clazz
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0  clazz  Ljava/lang/Class<+Lorg/apache/lucene/store/FSDirectory;>;
            0    1     1   path  Ljava/nio/file/Path;
    Exceptions:
      throws java.lang.ReflectiveOperationException
    Signature: (Ljava/lang/Class<+Lorg/apache/lucene/store/FSDirectory;>;Ljava/nio/file/Path;)Lorg/apache/lucene/store/FSDirectory;
    MethodParameters:
       Name  Flags
      clazz  
      path   

  public static org.apache.lucene.store.FSDirectory newFSDirectory(java.lang.Class<? extends org.apache.lucene.store.FSDirectory>, java.nio.file.Path, org.apache.lucene.store.LockFactory);
    descriptor: (Ljava/lang/Class;Ljava/nio/file/Path;Lorg/apache/lucene/store/LockFactory;)Lorg/apache/lucene/store/FSDirectory;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=4, args_size=3
        start local 0 // java.lang.Class clazz
        start local 1 // java.nio.file.Path path
        start local 2 // org.apache.lucene.store.LockFactory lf
         0: .line 137
            aload 0 /* clazz */
            iconst_2
            anewarray java.lang.Class
            dup
            iconst_0
            ldc Ljava/nio/file/Path;
            aastore
            dup
            iconst_1
            ldc Lorg/apache/lucene/store/LockFactory;
            aastore
            invokevirtual java.lang.Class.getConstructor:([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;
            astore 3 /* ctor */
        start local 3 // java.lang.reflect.Constructor ctor
         1: .line 138
            aload 3 /* ctor */
            iconst_2
            anewarray java.lang.Object
            dup
            iconst_0
            aload 1 /* path */
            aastore
            dup
            iconst_1
            aload 2 /* lf */
            aastore
            invokevirtual java.lang.reflect.Constructor.newInstance:([Ljava/lang/Object;)Ljava/lang/Object;
            checkcast org.apache.lucene.store.FSDirectory
            areturn
        end local 3 // java.lang.reflect.Constructor ctor
        end local 2 // org.apache.lucene.store.LockFactory lf
        end local 1 // java.nio.file.Path path
        end local 0 // java.lang.Class clazz
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0  clazz  Ljava/lang/Class<+Lorg/apache/lucene/store/FSDirectory;>;
            0    2     1   path  Ljava/nio/file/Path;
            0    2     2     lf  Lorg/apache/lucene/store/LockFactory;
            1    2     3   ctor  Ljava/lang/reflect/Constructor<+Lorg/apache/lucene/store/FSDirectory;>;
    Exceptions:
      throws java.lang.ReflectiveOperationException
    Signature: (Ljava/lang/Class<+Lorg/apache/lucene/store/FSDirectory;>;Ljava/nio/file/Path;Lorg/apache/lucene/store/LockFactory;)Lorg/apache/lucene/store/FSDirectory;
    MethodParameters:
       Name  Flags
      clazz  
      path   
      lf     
}
SourceFile: "CommandLineUtil.java"