空指针问题！求救！

[小东他哥]

public class TestJdbc {
	private static List<TestBean> tbs;
	
	public static void main(String[] args) {
		String url ="jdbc:mysql://localhost/testjdbc?user=root&password=root&useUnicode=true&characterEncoding=8859_1";
		TestBean tb=new TestBean();
		ResultSet rs=null;
		try {
			Connection conn= DriverManager.getConnection(url);
			Statement stmt=conn.createStatement();
			rs=stmt.executeQuery("select * from test");
			while(rs.next()){
				tb.setId(rs.getLong("id"));
				tb.setName(rs.getString("name"));
				tb.setPassword(rs.getString("password"));
				tbs.add(tb);
				
			}
			for(TestBean tb1: tbs){
				System.out.println(tb1.getName());
				System.out.println(tb1.getPassword());
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 
	}

tbs.add(tb);报了一个 java.lang.NullPointerException。求解！！！！

[-droidcoffee-]

private static List<TestBean> tbs = new ArrayList<TestBean>();

[JerryZhou_]

TestBean tb=new TestBean();
改成
TestBean tb = null;
tb=new TestBean();//放在while循环里面

[xinlan1022]

private static List<TestBean> tbs = new ArrayList<TestBean>();

[小东他哥]

谢啦！！！！！！！

[dinghun8leech]

空的对象引用直接向他发送消息，当然会出这个异常。
private static List<TestBean> tbs;
tbs直到tbs.add(tb);都没被进行赋值，当然是个空。