String[] 中为null的问题

public class TestStringArray {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO 	Auto-generated method stub
		String[] test = new String[2];
		Integer testInteger = null;
		String testString = String.valueOf(testInteger);
		test[0] = "1";
		test[1] = testString;
		for (int i = 0; i < test.length; i++) {
			if (test[i] == null) test[i] = "1"; 
			System.out.println("--" + test[i] + "--");
		}
	}

}

输出结果：
--1--
--null--