https://jsoup.org/: jsoup is a Java library for working with real-world HTML. It provides a very convenient API for extracting and manipulating data, using the best of DOM, CSS, and jquery-like methods. jsoup implements the WHATWG HTML5 specification, and parses HTML to the same DOM as modern browsers do. (Jonathan Hedley)
  • Jonathan Hedley 
public class org.jsoup.UncheckedIOException extends java.lang.RuntimeException
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.jsoup.UncheckedIOException
  super_class: java.lang.RuntimeException
{
  public void <init>(java.io.IOException);
    descriptor: (Ljava/io/IOException;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.jsoup.UncheckedIOException this
        start local 1 // java.io.IOException cause
         0: .line 7
            aload 0 /* this */
            aload 1 /* cause */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
         1: .line 8
            return
        end local 1 // java.io.IOException cause
        end local 0 // org.jsoup.UncheckedIOException this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/jsoup/UncheckedIOException;
            0    2     1  cause  Ljava/io/IOException;
    MethodParameters:
       Name  Flags
      cause  

  public void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.jsoup.UncheckedIOException this
        start local 1 // java.lang.String message
         0: .line 11
            aload 0 /* this */
            new java.io.IOException
            dup
            aload 1 /* message */
            invokespecial java.io.IOException.<init>:(Ljava/lang/String;)V
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
         1: .line 12
            return
        end local 1 // java.lang.String message
        end local 0 // org.jsoup.UncheckedIOException this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lorg/jsoup/UncheckedIOException;
            0    2     1  message  Ljava/lang/String;
    MethodParameters:
         Name  Flags
      message  

  public java.io.IOException ioException();
    descriptor: ()Ljava/io/IOException;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.jsoup.UncheckedIOException this
         0: .line 15
            aload 0 /* this */
            invokevirtual org.jsoup.UncheckedIOException.getCause:()Ljava/lang/Throwable;
            checkcast java.io.IOException
            areturn
        end local 0 // org.jsoup.UncheckedIOException this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/jsoup/UncheckedIOException;
}
SourceFile: "UncheckedIOException.java"