Spring Hibernate get tuple by id -

i trying create simple "teacher" database. able create method adding new teacher database, need able 1 , delete 1 "id". help, of how should implement it. have added following code files: appconfig, teacher (entity class), iteacherdao (interface), teacherdao(implementation of interface) , class main method timestarapplication.

appconfig

package com.superum.timestar;  import javax.sql.datasource; import org.apache.commons.dbcp.basicdatasource; import org.hibernate.sessionfactory; import org.springframework.context.annotation.bean; import org.springframework.context.annotation.configuration; import org.springframework.orm.hibernate4.hibernatetemplate; import org.springframework.orm.hibernate4.hibernatetransactionmanager; import org.springframework.orm.hibernate4.localsessionfactorybuilder; import org.springframework.transaction.annotation.enabletransactionmanagement; import com.superum.timestar.dao.iteacherdao; import com.superum.timestar.dao.teacherdao; import com.superum.timestar.entity.teacher; @configuration  @enabletransactionmanagement public class appconfig {       @bean           public iteacherdao teacherdao() {              return new teacherdao();           }     @bean     public hibernatetemplate hibernatetemplate() {         return new hibernatetemplate(sessionfactory());     }     @bean     public sessionfactory sessionfactory() {         return new localsessionfactorybuilder(getdatasource())            .addannotatedclasses(teacher.class)            .buildsessionfactory();     }     @bean     public datasource getdatasource() {         basicdatasource datasource = new basicdatasource();         datasource.setdriverclassname("com.mysql.jdbc.driver");         datasource.seturl("jdbc:mysql://localhost:3306/time_star");         datasource.setusername("root");         datasource.setpassword("password");          return datasource;     }     @bean     public hibernatetransactionmanager hibtransman(){         return new hibernatetransactionmanager(sessionfactory());     } }  

teacher

package com.superum.timestar.entity;   import javax.persistence.column; import javax.persistence.entity; import javax.persistence.generatedvalue; import javax.persistence.id; import javax.persistence.table;  @entity @table(name="teachers") public class teacher {      @id@generatedvalue      @column(name="t_id")     private int id;      @column(name="t_name")     private string name;      @column(name="t_lastname")     private string lastname;      @column(name="t_phone")     private string phone;     @column(name="t_age")     private int age;      public int getid() {         return id;     }      public void setid(int id) {         id = id;     }      public string getname() {         return name;     }      public void setname(string name) {         this.name = name;     }      public string getlastname() {         return lastname;     }      public void setlastname(string lastname) {         this.lastname = lastname;     }      public string getphone() {         return phone;     }      public void setphone(string phone) {         this.phone = phone;     }      public int getage() {         return age;     }  public void setage(int age) {     this.age = age; } 

}

iteacherdao

    package com.superum.timestar.dao;      public interface iteacherdao {          public void addteacher(string name, string lastname, string phone, int age);     //  public void getteacher(int id); ``    //    public void deleteteacher();  } 

teacherdao

package com.superum.timestar.dao;  import javax.transaction.transactional;  import org.springframework.beans.factory.annotation.autowired; import org.springframework.orm.hibernate4.hibernatetemplate;  import com.superum.timestar.entity.teacher;   @transactional public class teacherdao implements iteacherdao{      @autowired       private hibernatetemplate hibernatetemplate;     public void addteacher(string name, string lastname, string phone, int age){         teacher teacher = new teacher();         teacher.setname(name);         teacher.setlastname(lastname);         teacher.setphone(phone);         teacher.setage(age);         hibernatetemplate.save(teacher);     } //  need create id  //  public void getteacher(int id){ //       //  } 

i hope question not entirely horrible.

}

iteacherdao

package com.superum.timestar.dao;  public interface iteacherdao {      public void addteacher(string name, string lastname, string phone, int age);     public teacher getteacher(int id); //method teacher id     public void deleteteacher(int id); //method delete teacher id } 

teacherdao

package com.superum.timestar.dao;  import javax.transaction.transactional;  import org.springframework.beans.factory.annotation.autowired; import org.springframework.orm.hibernate4.hibernatetemplate;  import com.superum.timestar.entity.teacher;   @transactional public class teacherdao implements iteacherdao{  @autowired   private hibernatetemplate hibernatetemplate; public void addteacher(string name, string lastname, string phone, int age){     teacher teacher = new teacher();     teacher.setname(name);     teacher.setlastname(lastname);     teacher.setphone(phone);     teacher.setage(age);     hibernatetemplate.save(teacher); }  public teacher getteacher(int id){    teacher teacher = (teacher)hibernatetemplate.get(teacher.class, id);    return teacher; }  public void deleteteacher(int id){    teacher teacher = (teacher)hibernatetemplate.get(teacher.class, id);    hibernatetemplate.delete(teacher); }