Java~IO输入输出流练习题项目 （优化后的）教师信息类管理 （实现五中查询方法 修改信息方法 增加教师方法 删除教师方法 和批量处理教师方法）(1)

return temp;

}

}

return null;

}

//通过性别查询教师

public Teacher[] findTeacherBySex(String sex) throws IOException {

ArrayList allTeacher = findAllTeacher();

ArrayList result = new ArrayList<>();

for(Teacher temp : allTeacher) {

if(temp.sex.equals(sex)) {

result.add(temp);

}

}

return result.toArray(new Teacher[0]);

}

//通过主修专业查询代课教师

public Teacher findTeacherByMajor(String major)throws IOException {

ArrayList allTeacher = findAllTeacher();

for(Teacher temp : allTeacher) {

if(temp.major.equals(major)) {

return temp;

}

}

return null;

}

//通过教师编号查询教师

public Teacher findTeacherByTeacherID(String teacherID) throws IOException{

ArrayList allTeacher = findAllTeacher();

for(Teacher temp : allTeacher) {

if(temp.teacherID.equals(teacherID)) {

return temp;

}

}

return null;

}

//通过教师编号找打这个教师然后修改这个教师信息

public void reviseTeacherInfor(Teacher teacher) throws IOException {

if(teacher == null) {

return;

}

ArrayList allTeacher = findAllTeacher();

Teacher oldTeacher = findTeacherByTeacherID(teacher.teacherID);

if(oldTeacher == null) {

return;

}

allTeacher.set(allTeacher.indexOf(oldTeacher), teacher);

writeToTxT(allTeacher);

}

//批量修改教师信息

public void reviseTeachersInfors(Teacher[] teachers) throws IOException {

if(teachers == null) {

return;

}

for(Teacher teacher : teachers) {

reviseTeacherInfor(teacher);

}

}

//新增加教师

public void addTeacher(Teacher teacher) throws IOException {

if(teacher == null) {

return;

}

Teacher oldTeacher = findTeacherByTeacherID(teacher.teacherID);

if(oldTeacher != null) {

return;

}

FileWriter fW = new FileWriter(“E:\teacher.txt”, true);

BufferedWriter bW = new BufferedWriter(fW);

String str = teacher.toString();

bW.newLine();

bW.write(str);

bW.close();

fW.close();

}

//批量增加教师

public void addTeachers(Teacher[] teachers) throws IOException {

if(teachers == null) {

return;

}

for(Teacher teacher : teachers) {

addTeacher(teacher);

}

}

//删除教师

public void deleteTeacher(String teacherID) throws IOException {

if(teacherID == null) {

return;

}

ArrayList allTeacher = findAllTeacher();

Teacher oldTeacher = findTeacherByTeacherID(teacherID);

if(oldTeacher == null) {

return;

}

allTeacher.remove(oldTeacher);

writeToTxT(allTeacher);

}

//批量删除教师

public void deleteTeachers(Teacher[] teachers) throws IOException {

if(teachers == null) {

return;

}

for(Teacher teacher : teachers) {

deleteTeacher(teacher.teacherID);

}

}

}

测试：

import java.io.IOException;

import java.util.Arrays;

public class Test {

public static void main(String[] args) throws IOException, IOException {

TeacherDeal teacherDeal = new TeacherDeal();

System.out.println(“=通过班级编号查询老师=”);

System.out.println(teacherDeal.findTeacherByCalssID(“t02”));

System.out.println(“=通过名字查询老师=”);

System.out.println(teacherDeal.findTeacherByName(“张三”));

System.out.println(“=通过性别查询老师=”);

System.out.println(Arrays.toString(teacherDeal.findTeacherBySex(“男”)));

System.out.println(“=通过主修专业查询老师=”);

System.out.println(teacherDeal.findTeacherByMajor(“计算机科学与技术”));

System.out.println(“=通过教师编号查询老师=”);

System.out.println(teacherDeal.findTeacherByTeacherID(“19850401”));

System.out.println(“=增加教师王五=”);

teacherDeal.addTeacher(new Teacher(“t03”, “王五”, “女”, “物联网”, “19800112”));

System.out.println(teacherDeal.findTeacherByName(“王五”));

System.out.println(“=删除教师李四=”);

teacherDeal.deleteTeacher(“19820317”);

System.out.println(teacherDeal.findTeacherByName(“李四”));

System.out.println(“=修改教师信息 将张三改为 女 物联网专业=”);

teacherDeal.reviseTeacherInfor(new Teacher(“t01”, “张三”, “女”, “物联网”, “19850401”));

System.out.println(teacherDeal.findTeacherByName(“张三”));

System.out.println(“=通过性别查询老师=”);

System.out.println(Arrays.toString(teacherDeal.findTeacherBySex(“女”)));

}

}

结果：

=通过班级编号查询老师=

t02,李四,男,计算机科学与技术,19820317

=通过名字查询老师=

t01,张三,男,网络工程,19850401

=通过性别查询老师=

[t01,张三,男,网络工程,19850401, t02,李四,男,计算机科学与技术,19820317]

=通过主修专业查询老师=

t02,李四,男,计算机科学与技术,19820317

=通过教师编号查询老师=

t01,张三,男,网络工程,19850401

=增加教师王五=

t03,王五,女,物联网,19800112

=删除教师李四=

null

架构学习资料

由于篇幅限制小编，pdf文档的详解资料太全面，细节内容实在太多啦，所以只把部分知识点截图出来粗略的介绍，每个小节点里面都有更细化的内容！

19800112

=删除教师李四=

null

架构学习资料

[外链图片转存中…(img-ZW3LBoeN-1714127333577)]

[外链图片转存中…(img-iwSQzAZK-1714127333578)]

[外链图片转存中…(img-oe2yoDW0-1714127333578)]

[外链图片转存中…(img-spyPjsn8-1714127333578)]

[外链图片转存中…(img-LHuu91o1-1714127333578)]

由于篇幅限制小编，pdf文档的详解资料太全面，细节内容实在太多啦，所以只把部分知识点截图出来粗略的介绍，每个小节点里面都有更细化的内容！

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