JType implements Type, Type.ArrayType { @Override public boolean isParameterized() { return typeBinding.isParameterizedType() && !typeArguments().isEmpty(); } JType(JSema sema, ITypeBinding typeBinding); @Override boolean is(String fullyQualifiedName); @Override boolean isSubtypeOf(String fullyQualifiedName); @Override boolean isSubtypeOf(Type superType); @Override boolean isArray(); @Override boolean isClass(); @Override boolean isVoid(); @Override boolean isPrimitive(); @Override boolean isPrimitive(Primitives primitive); @Override boolean isUnknown(); @Override boolean isNumerical(); @Override String fullyQualifiedName(); @Override String name(); @Override String toString(); @Override Symbol.TypeSymbol symbol(); @Override Type erasure(); @Override Type elementType(); @Override boolean equals(Object obj); @Override int hashCode(); @Override boolean isParameterized(); @Override List<Type> typeArguments();  }
@Test void isParametrizedType() { JavaTree.CompilationUnitTreeImpl cu = test("class C { void m() { new java.util.ArrayList<String>(); } }"); ClassTreeImpl c = (ClassTreeImpl) cu.types().get(0); MethodTreeImpl m = (MethodTreeImpl) c.members().get(0); ExpressionStatementTreeImpl s = (ExpressionStatementTreeImpl) Objects.requireNonNull(m.block()).body().get(0); AbstractTypedTree e = Objects.requireNonNull((AbstractTypedTree) s.expression()); assertThat(cu.sema.type(e.typeBinding).isParameterized()) .isEqualTo(e.symbolType().isParameterized()) .isTrue(); }