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Groovy example source code file (InstanceofTest.groovy)

This example Groovy source code file (InstanceofTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

boolean, boolean, double, double, groovytestcase, instanceoftest, integer, map, map, object, object

The Groovy InstanceofTest.groovy source code

 * Copyright 2003-2010 the original author or authors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package groovy

class InstanceofTest extends GroovyTestCase {

    void testTrue() {

        def x = false
        def o = 12
        if ( o instanceof Integer ) {
            x = true

        assert x == true
    void testFalse() {

        def x = false
        def o = 12
        if ( o instanceof Double ) {
            x = true

        assert x == false
    void testImportedClass() {
        def m = ["xyz":2]
        assert m instanceof Map
        assert !(m instanceof Double)
        assertTrue(m instanceof Map)
        assertFalse(m instanceof Double)
    void testFullyQualifiedClass() {
        def l = [1, 2, 3]
        assert l instanceof java.util.List
        assert !(l instanceof Map)
        assertTrue(l instanceof java.util.List)
        assertFalse(l instanceof Map)
    void testBoolean(){
       assert true instanceof Object
       assert true==true instanceof Object
       assert true==false instanceof Object
       assert true==false instanceof Boolean
       assert !new Object() instanceof Boolean

Other Groovy examples (source code examples)

Here is a short list of links related to this Groovy InstanceofTest.groovy source code file:

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