[Java]Enumで遊んでみる

長らくJavaをやってなかったら、Enumとかいうのができていたので使ってみた。
使い方あっているのだろうか…

// for later than 1.5
enum KtaiInfoEnum {

	DOCOMO(0, "docomo"),
	SOFTBANK(1, "softbank"),
	AU(2, "au");

	private String carrierName = null;
	private Integer type = 0;
	private KtaiInfoEnum(Integer type, String carrierName) {
		this.type = type;
		this.carrierName = carrierName;
	}
	public Integer getType() {
		return this.type;
	}
	public String getCarrierName() {
		return this.carrierName;
	}
}

// for java 1.4
class KtaiInfo {

	public static final KtaiInfo DOCOMO = new KtaiInfo(0, "docomo");
	public static final KtaiInfo SOFTBANK = new KtaiInfo(1, "softbank");
	public static final KtaiInfo AU = new KtaiInfo(2, "au");

	private String carrierName = null;
	private Integer type = null;
	private KtaiInfo(Integer type, String carrierName) {
		this.type = type;
		this.carrierName = carrierName;
	}

	public Integer getType() {
		return this.type;
	}
	public String getCarrierName() {
		return this.carrierName;
	}

}

public class TestListStructure {

    public static void main(String args[]) {

    	System.out.println(KtaiInfo.SOFTBANK.getType() + ":" + KtaiInfo.SOFTBANK.getCarrierName());
    	System.out.println(KtaiInfoEnum.SOFTBANK.getType() + ":" + KtaiInfoEnum.SOFTBANK.getCarrierName());

    	for(KtaiInfoEnum ktaiInfo: KtaiInfoEnum.values()){
    		System.out.println(ktaiInfo.getType() + ":" + ktaiInfo.getCarrierName());
    	}

    }

}

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