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 final class org.jsoup.helper.Validate
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.jsoup.helper.Validate
  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.jsoup.helper.Validate this
         0: .line 8
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.jsoup.helper.Validate this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/jsoup/helper/Validate;

  public static void notNull(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.lang.Object obj
         0: .line 15
            aload 0 /* obj */
            ifnonnull 2
         1: .line 16
            new java.lang.IllegalArgumentException
            dup
            ldc "Object must not be null"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 17
      StackMap locals:
      StackMap stack:
            return
        end local 0 // java.lang.Object obj
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0   obj  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      obj   

  public static void notNull(java.lang.Object, java.lang.String);
    descriptor: (Ljava/lang/Object;Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // java.lang.Object obj
        start local 1 // java.lang.String msg
         0: .line 25
            aload 0 /* obj */
            ifnonnull 2
         1: .line 26
            new java.lang.IllegalArgumentException
            dup
            aload 1 /* msg */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 27
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.String msg
        end local 0 // java.lang.Object obj
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0   obj  Ljava/lang/Object;
            0    3     1   msg  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      obj   
      msg   

  public static void isTrue(boolean);
    descriptor: (Z)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // boolean val
         0: .line 34
            iload 0 /* val */
            ifne 2
         1: .line 35
            new java.lang.IllegalArgumentException
            dup
            ldc "Must be true"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 36
      StackMap locals:
      StackMap stack:
            return
        end local 0 // boolean val
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0   val  Z
    MethodParameters:
      Name  Flags
      val   

  public static void isTrue(boolean, java.lang.String);
    descriptor: (ZLjava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // boolean val
        start local 1 // java.lang.String msg
         0: .line 44
            iload 0 /* val */
            ifne 2
         1: .line 45
            new java.lang.IllegalArgumentException
            dup
            aload 1 /* msg */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 46
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.String msg
        end local 0 // boolean val
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0   val  Z
            0    3     1   msg  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      val   
      msg   

  public static void isFalse(boolean);
    descriptor: (Z)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // boolean val
         0: .line 53
            iload 0 /* val */
            ifeq 2
         1: .line 54
            new java.lang.IllegalArgumentException
            dup
            ldc "Must be false"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 55
      StackMap locals:
      StackMap stack:
            return
        end local 0 // boolean val
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0   val  Z
    MethodParameters:
      Name  Flags
      val   

  public static void isFalse(boolean, java.lang.String);
    descriptor: (ZLjava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // boolean val
        start local 1 // java.lang.String msg
         0: .line 63
            iload 0 /* val */
            ifeq 2
         1: .line 64
            new java.lang.IllegalArgumentException
            dup
            aload 1 /* msg */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 65
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.String msg
        end local 0 // boolean val
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0   val  Z
            0    3     1   msg  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      val   
      msg   

  public static void noNullElements(java.lang.Object[]);
    descriptor: ([Ljava/lang/Object;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.lang.Object[] objects
         0: .line 72
            aload 0 /* objects */
            ldc "Array must not contain any null objects"
            invokestatic org.jsoup.helper.Validate.noNullElements:([Ljava/lang/Object;Ljava/lang/String;)V
         1: .line 73
            return
        end local 0 // java.lang.Object[] objects
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0  objects  [Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      objects  

  public static void noNullElements(java.lang.Object[], java.lang.String);
    descriptor: ([Ljava/lang/Object;Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=6, args_size=2
        start local 0 // java.lang.Object[] objects
        start local 1 // java.lang.String msg
         0: .line 81
            aload 0 /* objects */
            dup
            astore 5
            arraylength
            istore 4
            iconst_0
            istore 3
            goto 5
      StackMap locals: java.lang.Object[] java.lang.String top int int java.lang.Object[]
      StackMap stack:
         1: aload 5
            iload 3
            aaload
            astore 2 /* obj */
        start local 2 // java.lang.Object obj
         2: .line 82
            aload 2 /* obj */
            ifnonnull 4
         3: .line 83
            new java.lang.IllegalArgumentException
            dup
            aload 1 /* msg */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 2 // java.lang.Object obj
         4: .line 81
      StackMap locals:
      StackMap stack:
            iinc 3 1
      StackMap locals:
      StackMap stack:
         5: iload 3
            iload 4
            if_icmplt 1
         6: .line 84
            return
        end local 1 // java.lang.String msg
        end local 0 // java.lang.Object[] objects
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    7     0  objects  [Ljava/lang/Object;
            0    7     1      msg  Ljava/lang/String;
            2    4     2      obj  Ljava/lang/Object;
    MethodParameters:
         Name  Flags
      objects  
      msg      

  public static void notEmpty(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.lang.String string
         0: .line 91
            aload 0 /* string */
            ifnull 1
            aload 0 /* string */
            invokevirtual java.lang.String.length:()I
            ifne 2
         1: .line 92
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "String must not be empty"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 93
      StackMap locals:
      StackMap stack:
            return
        end local 0 // java.lang.String string
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0  string  Ljava/lang/String;
    MethodParameters:
        Name  Flags
      string  

  public static void notEmpty(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // java.lang.String string
        start local 1 // java.lang.String msg
         0: .line 101
            aload 0 /* string */
            ifnull 1
            aload 0 /* string */
            invokevirtual java.lang.String.length:()I
            ifne 2
         1: .line 102
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            aload 1 /* msg */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 103
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.String msg
        end local 0 // java.lang.String string
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0  string  Ljava/lang/String;
            0    3     1     msg  Ljava/lang/String;
    MethodParameters:
        Name  Flags
      string  
      msg     

  public static void fail(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // java.lang.String msg
         0: .line 110
            new java.lang.IllegalArgumentException
            dup
            aload 0 /* msg */
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // java.lang.String msg
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0   msg  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      msg   
}
SourceFile: "Validate.java"