请教,我链接数据库以后:Statement stmt1 = null;
stmt1.addBatch("insert into wdl (id,name,home) values('14','scott','意大利')");
stmt1.addBatch("insert into wdl(id,name,home) values('15','Moto','德国')");
stmt1.executeBatch();总是提示我:
java.lang.NullPointerException我哪里插入空值了呢?请高手指教!!谢谢
stmt1.addBatch("insert into wdl (id,name,home) values('14','scott','意大利')");
stmt1.addBatch("insert into wdl(id,name,home) values('15','Moto','德国')");
stmt1.executeBatch();总是提示我:
java.lang.NullPointerException我哪里插入空值了呢?请高手指教!!谢谢
Statement stmt1 = null;
还没实例化就用了
谢谢
Statement stmt1 = null;
还没实例化就用了"哈哈。