/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 */

package org.apache.jmeter.timers;

import java.io.IOException;

import javax.script.ScriptEngine;
import javax.script.ScriptException;

import org.apache.jmeter.testbeans.TestBean;
import org.apache.jmeter.util.JSR223TestElement;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.Logger;

public class JSR223Timer extends JSR223TestElement implements Cloneable, Timer, TestBean {
    private static final Logger log = LoggingManager.getLoggerForClass();

    private static final long serialVersionUID = 4;

    /** {@inheritDoc} */
    public long delay() {
        long delay = 0;
        try {
            ScriptEngine scriptEngine = getScriptEngine();
            Object o = processFileOrScript(scriptEngine, null);
            if (o == null) {
                log.warn("Script did not return a value");
                return 0;
            }
            delay = Long.valueOf(o.toString()).longValue();
        } catch (NumberFormatException e) {
            log.warn("Problem in JSR223 script ", e);
        } catch (IOException e) {
            log.warn("Problem in JSR223 script ", e);
        } catch (ScriptException e) {
            log.warn("Problem in JSR223 script ", e);
        }
        return delay;
    }
}

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 */

package org.apache.jmeter.timers;

import java.io.IOException;

import javax.script.ScriptEngine;
import javax.script.ScriptException;

import org.apache.jmeter.testbeans.TestBean;
import org.apache.jmeter.util.JSR223TestElement;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.Logger;

public class JSR223Timer extends JSR223TestElement implements Cloneable, Timer, TestBean {
    private static final Logger log = LoggingManager.getLoggerForClass();

    private static final long serialVersionUID = 4;

    /** {@inheritDoc} */
    public long delay() {
        long delay = 0;
        try {
            ScriptEngine scriptEngine = getScriptEngine();
            Object o = processFileOrScript(scriptEngine, null);
            if (o == null) {
                log.warn("Script did not return a value");
                return 0;
            }
            delay = Long.parseLong(o.toString());
        } catch (NumberFormatException e) {
            log.warn("Problem in JSR223 script ", e);
        } catch (IOException e) {
            log.warn("Problem in JSR223 script ", e);
        } catch (ScriptException e) {
            log.warn("Problem in JSR223 script ", e);
        }
        return delay;
    }
}

Use parseLong instead of useless Wrapper