https://logging.apache.org/log4j/2.x/log4j-core/: The Apache Log4j Implementation (The Apache Software Foundation)
  • Ralph Goers (Nextiva)
  • Gary Gregory (Rocket Software)
  • Scott Deboy
  • Remko Popma
  • Nick Williams
  • Matt Sicker (Independent Consultant)
  • Bruce Brouwer
  • Mikael Ståldal (Spotify) 
public final class org.apache.logging.log4j.core.util.Booleans
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.logging.log4j.core.util.Booleans
  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.logging.log4j.core.util.Booleans this
         0: .line 24
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 25
            return
        end local 0 // org.apache.logging.log4j.core.util.Booleans this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/logging/log4j/core/util/Booleans;

  public static boolean parseBoolean(java.lang.String, boolean);
    descriptor: (Ljava/lang/String;Z)Z
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // java.lang.String s
        start local 1 // boolean defaultValue
         0: .line 37
            ldc "true"
            aload 0 /* s */
            invokevirtual java.lang.String.equalsIgnoreCase:(Ljava/lang/String;)Z
            ifne 2
            iload 1 /* defaultValue */
            ifeq 1
            ldc "false"
            aload 0 /* s */
            invokevirtual java.lang.String.equalsIgnoreCase:(Ljava/lang/String;)Z
            ifeq 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
      StackMap locals:
      StackMap stack:
         2: iconst_1
            ireturn
        end local 1 // boolean defaultValue
        end local 0 // java.lang.String s
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    3     0             s  Ljava/lang/String;
            0    3     1  defaultValue  Z
    MethodParameters:
              Name  Flags
      s             final
      defaultValue  final
}
SourceFile: "Booleans.java"