Examples of java.util.prefs.AbstractPreferences.nodeExists()

Class java.util.prefs.AbstractPreferences

Examples of java.util.prefs.AbstractPreferences.nodeExists()

java.util.prefs.AbstractPreferences.nodeExists()
Implements the nodeExists method as per the specification in {@link Preferences#nodeExists(String)}.
This implementation is very similar to {@link #node(String)}, except that {@link #getChild(String)} is used instead of {@link #childSpi(String)}. @param path the path name of the node whose existence is to be checked. @return true if the specified node exists. @throws BackingStoreException if this operation cannot be completeddue to a failure in the backing store, or inability to communicate with it. @throws IllegalArgumentException if the path name is invalid (i.e.,it contains multiple consecutive slash characters, or ends with a slash character and is more than one character long). @throws IllegalStateException if this node (or an ancestor) has beenremoved with the {@link #removeNode()} method andpathname is not the empty string ("").


    public void test_nodeExists() throws BackingStoreException {
        AbstractPreferences test = (AbstractPreferences) Preferences.userRoot()
                .node("test");
        try {
            test.nodeExists(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // Expected
        }

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            // Expected
        }


        test.removeNode();
        try {
            test.nodeExists(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // Expected
        }
    }

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    public void test_nodeExists() throws BackingStoreException {
        AbstractPreferences test = (AbstractPreferences) Preferences.userRoot()
                .node("test");
        try {
            test.nodeExists(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // Expected
        }

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            // Expected
        }


        test.removeNode();
        try {
            test.nodeExists(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // Expected
        }
    }

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    public void test_nodeExists() throws BackingStoreException {
        AbstractPreferences test = (AbstractPreferences) Preferences.userRoot()
                .node("test");
        try {
            test.nodeExists(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // Expected
        }

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            // Expected
        }


        test.removeNode();
        try {
            test.nodeExists(null);
            fail("should throw NullPointerException");
        } catch (NullPointerException e) {
            // Expected
        }
    }

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