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Commit baa25d1

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author
lionel
committed
add some implements
1 parent c534b8b commit baa25d1

3 files changed

Lines changed: 22 additions & 24 deletions

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‎src/main/accessControl/App.java‎

Lines changed: 8 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -1,26 +1,20 @@
11
package accessControl;
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/**
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* @author ls
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*public class Student 类具备全局可见性，在其它包中也可访问
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*一个class文件中仅能有一个public类
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*private string name 仅在本类可见
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*protected int score 在本类和子类可见
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*protected setScore 方法允许被子类覆盖,并访问，但在包外仍不可被访问,
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*即使在包外创建子类也不可访问 protected
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*default 级别为包内可见，包外不可见
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*总而言之，public全局可见
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*private本类可见
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*protected对本类，继承和保内可见
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*default只区分包内和包外
4+
* @author ls
5+
* public class Student 类具备全局可见性，在其它包中也可访问 一个class文件中仅能有一个public类
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* private string name 仅在本类可见 protected int score 在本类和子类可见 protected
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* setScore 方法允许被子类覆盖,并访问，但在包外仍不可被访问, 即使在包外创建子类也不可访问 protected default
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* 级别为包内可见，包外不可见 总而言之，public全局可见 private本类可见 protected对本类，继承和保内可见
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* default只区分包内和包外
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*/
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public class App {
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public static void main(String[] args) {
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Student ming=new PrimaryStudent("xiaoMing");
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Student ming = new PrimaryStudent("xiaoMing");
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ming.showInfo();
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ming.setScore(50);
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ming.showInfo();
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ming.id=9;
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ming.id = 9;
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ming.showInfo();
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}
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}

‎src/main/accessControl/Student.java‎

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -4,18 +4,18 @@ public class Student {
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private String name;
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protected int score;
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int id;
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public void showInfo() {
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System.out.println("student Info: name-" + name + " score-" + score+ " id-"+id);
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System.out.println("student Info: name-" + name + " score-" + score + " id-" + id);
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}
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public Student(String name) {
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// TODO Auto-generated constructor stub
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this.name = name;
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this.score = 0;
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this.id=0;
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this.id = 0;
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}
2020

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protected void setScore(int score) {
@@ -35,6 +35,6 @@ public PrimaryStudent(String name) {
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protected void setScore(int score) {
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// TODO Auto-generated method stub
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super.setScore(score);
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this.score = score+1;
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this.score = score + 1;
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}
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}

src/main/TestApp/Test.java renamed to src/main/testApp/Test.java

Lines changed: 10 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -1,24 +1,28 @@
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package TestApp;
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1+
package testApp;
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import accessControl.Student;
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public class Test {
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public static void main(String[] args) {
8-
Student qiang=new Student("XiaoQiang");
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Student qiang = new Student("XiaoQiang");
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qiang.showInfo();
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Student jun=new NewStudent("xiaoJun");
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Student jun = new NewStudent("xiaoJun");
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jun.showInfo();
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}
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}
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class NewStudent extends Student{
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/**
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* @see Student
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* @author Administrator
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*
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*/
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class NewStudent extends Student {
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public NewStudent(String name) {
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super(name);
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// TODO Auto-generated constructor stub
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}
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2226
@Override
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protected void setScore(int score) {
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// TODO Auto-generated method stub

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