java collection 集合并操作

/**
 *
 * @description:实现将传入的两个集合进行并,交,联集,差操作
 *
 * @author jackWu
 * Feb 5, 2007
 */

package com.gzsdx.itsm.common.util;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;

import com.gzsdx.itsm.common.listener.Manager;
import com.gzsdx.itsm.common.log.LogWriter;

public class CollectionPower ...{
    /** *//**
     * @class description: Feb 5, 2007
     */
    private static final LogWriter log = Manager.log;
    /** *//**
     * @author jackWu
     * @description:实现并操作
     * Feb 5, 2007
     * @param arrayA
     * @param arrayB
     * @return
     */
    public String collectionUnion(String[] arrayA, String[] arrayB) ...{
        String arrayC = "";
        try ...{
            List a = Arrays.asList(arrayA);
            List b = Arrays.asList(arrayB);
            Collection union = CollectionUtils.union(a, b);
            arrayC=union.toArray().toString();
        } catch (Exception ex) ...{
            log.info("集合并操作失败!info===============", ex.getMessage());
        }
        return arrayC;
    }
    /** *//**
     * @author jackWu
     * @description:实现交操作
     * Feb 5, 2007
     * @param arrayA
     * @param arrayB
     * @return
     */
    public String collectionIntersection(String[] arrayA, String[] arrayB) ...{
        String arrayC = "";
        try ...{
            List a = Arrays.asList(arrayA);
            List b = Arrays.asList(arrayB);
            Collection intersection = CollectionUtils.intersection(a, b);
            arrayC=intersection.toArray().toString();
        } catch (Exception ex) ...{
            log.info("集合并操作失败!info===============", ex.getMessage());
        }
        return arrayC;
    }
    /** *//**
     * @author jackWu
     * @description:实现联集操作
     * Feb 5, 2007
     * @param arrayA
     * @param arrayB
     * @return
     */
    public String collectionDisjunction(String[] arrayA, String[] arrayB) ...{
        String arrayC = "";
        try ...{
            List a = Arrays.asList(arrayA);
            List b = Arrays.asList(arrayB);
            Collection disjunction = CollectionUtils.disjunction(a, b);
            arrayC=disjunction.toArray().toString();
        } catch (Exception ex) ...{
            log.info("集合并操作失败!info===============", ex.getMessage());
        }
        return arrayC;
    }
    /** *//**
     * @author jackWu
     * @description:实现差操作
     * Feb 5, 2007
     * @param arrayA
     * @param arrayB
     * @return
     */
    public String collectionSubtract(String[] arrayA, String[] arrayB) ...{
        String arrayC = "";
        try ...{
            List a = Arrays.asList(arrayA);
            List b = Arrays.asList(arrayB);
            Collection subtract = CollectionUtils.subtract(a, b);
            arrayC=subtract.toArray().toString();
        } catch (Exception ex) ...{
            log.info("集合并操作失败!info===============", ex.getMessage());
        }
        return arrayC;
    }
}