A.scala

class A[U <: String, V <: Int] {
  def foo(u: U) = 1
  def foo(v: V) = 2
}

javap -v A

Classfile /Users/knorton/dev/xxx/A.class
  Last modified Oct 23, 2015; size 989 bytes
  MD5 checksum 9178110864a2f41521c971eea6fbf17d
  Compiled from "A.scala"
public class A<U extends java.lang.String, V extends java.lang.Object> extends java.lang.Object
  Signature: #3                           // <U:Ljava/lang/String;V:Ljava/lang/Object;>Ljava/lang/Object;
  SourceFile: "A.scala"
  RuntimeVisibleAnnotations:
    0: #7(#8=s#9)
Error: unknown attribute
    ScalaInlineInfo: length = 0x13
     01 00 00 03 00 13 00 14 00 00 0A 00 10 00 00 0A
     00 0B 00 
Error: unknown attribute
    ScalaSig: length = 0x3
     05 00 00 
  minor version: 0
  major version: 50
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Utf8               A
   #2 = Class              #1             //  A
   #3 = Utf8               <U:Ljava/lang/String;V:Ljava/lang/Object;>Ljava/lang/Object;
   #4 = Utf8               java/lang/Object
   #5 = Class              #4             //  java/lang/Object
   #6 = Utf8               A.scala
   #7 = Utf8               Lscala/reflect/ScalaSignature;
   #8 = Utf8               bytes
   #9 = Utf8               
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  #10 = Utf8               foo
  #11 = Utf8               (Ljava/lang/String;)I
  #12 = Utf8               this
  #13 = Utf8               LA;
  #14 = Utf8               u
  #15 = Utf8               Ljava/lang/String;
  #16 = Utf8               (I)I
  #17 = Utf8               v
  #18 = Utf8               I
  #19 = Utf8               <init>
  #20 = Utf8               ()V
  #21 = NameAndType        #19:#20        //  "<init>":()V
  #22 = Methodref          #5.#21         //  java/lang/Object."<init>":()V
  #23 = Utf8               Code
  #24 = Utf8               LocalVariableTable
  #25 = Utf8               LineNumberTable
  #26 = Utf8               Signature
  #27 = Utf8               (TU;)I
  #28 = Utf8               (TV;)I
  #29 = Utf8               SourceFile
  #30 = Utf8               RuntimeVisibleAnnotations
  #31 = Utf8               ScalaInlineInfo
  #32 = Utf8               ScalaSig
{
  public int foo(U);
    descriptor: (Ljava/lang/String;)I
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
         0: iconst_1      
         1: ireturn       
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       2     0  this   LA;
            0       2     1     u   Ljava/lang/String;
      LineNumberTable:
        line 2: 0
    Signature: #27                          // (TU;)I

  public int foo(V);
    descriptor: (I)I
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
         0: iconst_2      
         1: ireturn       
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       2     0  this   LA;
            0       2     1     v   I
      LineNumberTable:
        line 3: 0
    Signature: #28                          // (TV;)I

  public A();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0       
         1: invokespecial #22                 // Method java/lang/Object."<init>":()V
         4: return        
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       5     0  this   LA;
      LineNumberTable:
        line 4: 0
    Signature: #20                          // ()V
}