学步园

package com.entel.demo;

public class TestSwitch {

	public static void switchMethod(String demo) {
		switch (demo) {
		case "ZhangSan":
			System.out.println("ZhangSan come here");
			break;
		case "LiJian":
//			System.out.println("LiJian come here");
			break;
		case "LiSi":
			System.out.println("LiSi come here");
			break;
		default:
			break;
		}
	}

	public static void ifMethod(String demo) {
		if ("ZhangSan".equals(demo)) {
			System.out.println("ZhangSan come here");
		} else if ("LiJian".equals(demo)) {
//			System.out.println("LiJian come here");
		} else {
			System.out.println("LiSi come here");
		}
	}

	public static void main(String[] args) {
		String demo = "LiJian";
		
		long start = System.currentTimeMillis();
		for (int i = 1; i < 1000000; i++) {
			switchMethod(demo);
		}
		long end = System.currentTimeMillis();
		System.out.println(end - start);

		long start2 = System.currentTimeMillis();;
		for (int i = 1; i < 1000000; i++) {
			ifMethod(demo);
		}
		long end2 = System.currentTimeMillis();
		System.out.println(end2 - start2);
	}

}