求助，JDBC报错：SQL 命令未正确结束

[水煮花生-]

public static Vector<String> seek(int operateFlag, String name, String age, String sex) {
		String sql = "SELECT * from criminals";
		int selectFlag =0;
		if(name != null && !name.equals("")) {
			sql += "WHERE name LIKE ?";
			selectFlag = 1;
			if(age != null && !age.equals("")) {
				sql += "AND age LIKE ?";
				selectFlag = 2;
				if(!sex.equals("")) {
					sql += "AND sex LIKE ?";
					selectFlag =3;
				}
			}else {
				if(!sex.equals("")) {
					sql += "AND sex LIKE ?";
					selectFlag =4;
			    }
			}
		}else {
			if(age != null && !age.equals("")) {
				sql += "WHERE age LIKE ?";
				selectFlag = 5;
				if(!sex.equals("")) {
					sql += "AND sex LIKE ?";
					selectFlag =6;
				}
			}else {
				if(!sex.equals("")) {
					sql += "WHERE sex LIKE ?";
					selectFlag =7;
			    }
			}			
		}
		Vector <String> infoStringCollection = dataOperate.generalQuery(operateFlag, sql, selectFlag, name, age, sex);
		return infoStringCollection;
	}

public Vector<String> generalQuery(int operateFlag, String sql, int selectFlag, String name, String age,
			String sex) {
		Vector <String> infoStringCollection = new Vector <String>();
		try {
			pstmt = con.prepareStatement(sql);
			switch (selectFlag) {
			case 0 :
				break;
			case 1:
				pstmt.setString(1, name);
				break;
			case 2:
				pstmt.setString(1, name);
				pstmt.setString(2, age);
				break;
			case 3:
				pstmt.setString(1, name);
				pstmt.setString(2, age);
				pstmt.setString(3, sex);
				break;
			case 4:
				pstmt.setString(1, name);
				pstmt.setString(2, sex);
				break;
			case 5:
				pstmt.setString(1, age);
				break;
			case 6:
				pstmt.setString(1, age);
				pstmt.setString(1, sex);
				break;
			case 7:
				pstmt.setString(1, sex);
			}
			ResultSet rs = pstmt.executeQuery();
		}catch (SQLException se) {
			System.err.println("查询数据库出错");
			System.err.println(se);
			se.printStackTrace(System.err);
		}
		
		return infoStringCollection;
	}

[水煮花生-]

哇我忘记空格了，我好傻QAQ

[水煮花生-]

主要是第一个代码， 看了又看，就这几句SQL语句不知道错哪儿了，求大神指导

[水煮花生-]

相关联的还有一段这个

if(source == submit) {
			Vector <String> infoStringCollection = new Vector <String>();
			list.setListData(infoStringCollection);
			String name = nameField.getText().trim();
			String age = ageField.getText().trim();
			String sex = sexChoice.getSelectedItem().toString();
			infoStringCollection = Service.seek(operateFlag, name, age, sex);
			list.setListData(infoStringCollection);
			nameField.setText("");
			ageField.setText("");
			sexChoice.setSelectedIndex(0);
			return;
		
		}

[qq_37105320]

SQL拼接不对吧? 没空格？