gcc/libjava/testsuite/libjava.lang/InterfaceDispatch.java

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/* Test interface dispatch, type checking (instanceof), and casting. */
interface IA
{
String a();
}
interface IB extends IA
{
String b();
}
interface IC extends IB
{
void c();
int d();
IB e(int i);
}
interface ID
{
String z();
String a();
}
class CA
{
String a()
{
return "CA a()";
}
}
class CB implements IB
{
public String a()
{
return "CB a()";
}
public String b()
{
return "CB b()";
}
}
class CC extends CB
{
public int d()
{
return 99;
}
}
class CD extends CC implements IC
{
public String a()
{
return "CD a()";
}
public void c()
{
System.out.println("CD c()");
}
public int d()
{
return 6;
}
public IB e(int i)
{
if (i == 1)
return new CB();
else
return new CD();
}
}
class CE extends CB implements IB, ID
{
public String a()
{
return ("CE a()");
}
public String b()
{
return ("CE b()");
}
public String z()
{
return("CE z()");
}
}
public class InterfaceDispatch
{
public static void main(String args[])
{
new InterfaceDispatch();
}
public InterfaceDispatch()
{
/* _Jv_InstanceOf */
/* Object instanceof CLASS */
Object obj = new CA();
if (obj instanceof CA)
{
System.out.println ("ok 1");
}
else
{
System.out.println ("FAIL 1");
}
obj = new CD();
if (!(obj instanceof CA))
{
System.out.println ("ok 2a");
}
else
{
System.out.println ("FAIL 2a");
}
if (obj instanceof CB)
{
System.out.println ("ok 2b");
}
else
{
System.out.println ("FAIL 2b");
}
/* Object instanceof INTERFACE */
obj = new CB();
if (!(obj instanceof IC))
{
System.out.println("ok 3");
}
else
{
System.out.println ("FAIL 3");
}
if (obj instanceof IB)
{
System.out.println("ok 4");
}
else
{
System.out.println ("FAIL 4");
}
/* InterfaceRef instanceof INTERFACE */
IA ia = new CB();
if (ia instanceof IB)
{
System.out.println("ok 5");
}
else
{
System.out.println ("FAIL 5");
}
if (!(ia instanceof IC))
{
System.out.println("ok 6");
}
else
{
System.out.println ("FAIL 6");
}
/* InterfaceRef instanceof CLASS */
if (ia instanceof CB)
{
System.out.println("ok 7");
}
else
{
System.out.println ("FAIL 7");
}
if (!(ia instanceof CD))
{
System.out.println("ok 8");
}
else
{
System.out.println ("FAIL 8");
}
/* _Jv_CheckCast */
Object obj_ca = new CA();
Object obj_cc = new CC();
IA ia2;
try
{
ia2 = (IA) obj_cc;
System.out.println("ok 9");
}
catch (ClassCastException x)
{
System.out.println("FAIL 9");
}
CD cd;
try
{
cd = (CD) obj_ca;
System.out.println("FAIL 10");
}
catch (ClassCastException x)
{
System.out.println("ok 10");
}
IA ia3;
try
{
ia3 = (IB) obj_ca;
System.out.println("FAIL 11");
}
catch (ClassCastException x)
{
System.out.println("ok 11");
}
/* _Jv_LookupInterfaceMethod */
Object obj_cb = new CB();
IB ib = (IB) obj_cb;
ib.b();
if (ib.a().equalsIgnoreCase("CB a()"))
System.out.println("ok 12");
else
System.out.println("FAIL 12");
IC ic = new CD();
if (ic.a().equalsIgnoreCase("CD a()"))
System.out.println("ok 13");
else
System.out.println("FAIL 13");
if (ic.d() == 6)
System.out.println("ok 14");
else
System.out.println("FAIL 14");
Object ce = new CE();
ib = (IB) ce;
ID id = (ID) ce;
if (ib.b().equals("CE b()") && id.a().equals("CE a()"))
System.out.println("ok 15");
else
System.out.println("FAIL 15");
String t = ((ID)ce).z();
if (t.equalsIgnoreCase("CE z()"))
System.out.println("ok 16");
else
System.out.println("FAIL 16");
/* Array types */
Object[] obj_a = new CC[10];
try
{
CB[] ca_a = (CB[]) obj_a;
System.out.println("ok 17");
}
catch (ClassCastException x)
{
System.out.println("FAIL 17");
}
if (obj_a instanceof IB[])
{
System.out.println("ok 18");
}
else
{
System.out.println("FAIL 18");
}
IB[] ib_a = new CD[5];
try
{
CD[] cd_a = (CD[]) ib_a;
System.out.println("ok 19");
}
catch (ClassCastException x)
{
System.out.println("FAIL 19");
}
CA[] ca_a;
try
{
ca_a = (CA[]) ib_a;
System.out.println("FAIL 20");
}
catch (ClassCastException x)
{
System.out.println("ok 20");
}
/* Primitive types */
short[] short_a = new short[100];
try
{
obj = short_a;
System.out.println("ok 21");
}
catch (ClassCastException x)
{
System.out.println("FAIL 21");
}
try
{
short[] short_b = (short[]) obj;
System.out.println("ok 22");
}
catch (ClassCastException x)
{
System.out.println("FAIL 22");
}
int[] short_b;
try
{
short_b = (int[]) obj;
System.out.println("FAIL 23");
}
catch (ClassCastException x)
{
System.out.println("ok 23");
}
Object obj1 = new int[25];
if (obj1 instanceof short[])
{
System.out.println("FAIL 24");
}
else
{
System.out.println("ok 24");
}
if (obj1 instanceof int[])
{
System.out.println("ok 25");
}
else
{
System.out.println("FAIL 25");
}
/* null assignment */
CA obj_ca2 = null;
if (obj_ca2 instanceof CA)
{
System.out.println("FAIL 26");
}
else
{
System.out.println("ok 26");
}
}
}