https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
class com.google.common.io.LineReader$1 extends com.google.common.io.LineBuffer
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.io.LineReader$1
  super_class: com.google.common.io.LineBuffer
{
  final com.google.common.io.LineReader this$0;
    descriptor: Lcom/google/common/io/LineReader;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.io.LineReader);
    descriptor: (Lcom/google/common/io/LineReader;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.io.LineReader$1 this
         0: .line 48
            aload 0 /* this */
            aload 1
            putfield com.google.common.io.LineReader$1.this$0:Lcom/google/common/io/LineReader;
            aload 0 /* this */
            invokespecial com.google.common.io.LineBuffer.<init>:()V
            return
        end local 0 // com.google.common.io.LineReader$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/io/LineReader$1;
    MethodParameters:
        Name  Flags
      this$0  final

  protected void handleLine(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.google.common.io.LineReader$1 this
        start local 1 // java.lang.String line
        start local 2 // java.lang.String end
         0: .line 51
            aload 0 /* this */
            getfield com.google.common.io.LineReader$1.this$0:Lcom/google/common/io/LineReader;
            getfield com.google.common.io.LineReader.lines:Ljava/util/Queue;
            aload 1 /* line */
            invokeinterface java.util.Queue.add:(Ljava/lang/Object;)Z
            pop
         1: .line 52
            return
        end local 2 // java.lang.String end
        end local 1 // java.lang.String line
        end local 0 // com.google.common.io.LineReader$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/google/common/io/LineReader$1;
            0    2     1  line  Ljava/lang/String;
            0    2     2   end  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      line  
      end   
}
SourceFile: "LineReader.java"
EnclosingMethod: com.google.common.io.LineReader
NestHost: com.google.common.io.LineReader
InnerClasses:
  com.google.common.io.LineReader$1