import java.util.*;

class Test {
    public static void main(String[] args) {
        List<String> l = new ArrayList<String>();
        l.add("hello");
        System.out.println(l.get(0).length());
    }
}


Translates to

Compiled from "Test.java"
class Test extends java.lang.Object{
Test();
  Code:
   0:	aload_0
   1:	invokespecial	#1; //Method java/lang/Object."<init>":()V
   4:	return

public static void main(java.lang.String[]);
  Code:
   0:	new	#2; //class java/util/ArrayList
   3:	dup
   4:	invokespecial	#3; //Method java/util/ArrayList."<init>":()V
   7:	astore_1
   8:	aload_1
   9:	ldc	#4; //String hello
   11:	invokeinterface	#5,  2; //InterfaceMethod java/util/List.add:(Ljava/lang/Object;)Z
   16:	pop
   17:	getstatic	#6; //Field java/lang/System.out:Ljava/io/PrintStream;
   20:	aload_1
   21:	iconst_0
   22:	invokeinterface	#7,  2; //InterfaceMethod java/util/List.get:(I)Ljava/lang/Object;
   27:	checkcast	#8; //class java/lang/String
   30:	invokevirtual	#9; //Method java/lang/String.length:()I
   33:	invokevirtual	#10; //Method java/io/PrintStream.println:(I)V
   36:	return

}





import java.util.*;

class Test2 {
    public static void main(String[] args) {
        List l = new ArrayList();
        l.add("hello");
        System.out.println(((String) l.get(0)).length());
    }
}


Translates to

Compiled from "Test2.java"
class Test2 extends java.lang.Object{
Test2();
  Code:
   0:	aload_0
   1:	invokespecial	#1; //Method java/lang/Object."<init>":()V
   4:	return

public static void main(java.lang.String[]);
  Code:
   0:	new	#2; //class java/util/ArrayList
   3:	dup
   4:	invokespecial	#3; //Method java/util/ArrayList."<init>":()V
   7:	astore_1
   8:	aload_1
   9:	ldc	#4; //String hello
   11:	invokeinterface	#5,  2; //InterfaceMethod java/util/List.add:(Ljava/lang/Object;)Z
   16:	pop
   17:	getstatic	#6; //Field java/lang/System.out:Ljava/io/PrintStream;
   20:	aload_1
   21:	iconst_0
   22:	invokeinterface	#7,  2; //InterfaceMethod java/util/List.get:(I)Ljava/lang/Object;
   27:	checkcast	#8; //class java/lang/String
   30:	invokevirtual	#9; //Method java/lang/String.length:()I
   33:	invokevirtual	#10; //Method java/io/PrintStream.println:(I)V
   36:	return

}