1.

（1）

public class test1 {public static void main(String[] args) {javabean1.teachername="jianjun";//直接在类调用，方便一点点javabean1 s1 = new javabean1();s1.setName("liujiawei");s1.setAge(18);s1.setGender("男");s1.study();s1.show();System.out.println();javabean1 s2=new javabean1();s2.setName("fanwenshuo");s2.setAge(18);s2.setGender("女");s2.study();s2.show();}
}

（2）

public class javabean1 {String name;int age;String gender;public static String teachername;public javabean1() {}public javabean1(String name, int age, String gender) {this.name = name;this.age = age;this.gender = gender;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getGender() {return gender;}public void setGender(String gender) {this.gender = gender;}//行为public void study(){System.out.println(name+"正在学习");}public void show(){System.out.println(name+","+age+","+gender+","+teachername);}}

2.

int main(void)
{
    FILE* fp;
    fp = fopen("b.txt", "r+");
    if (fp == NULL)
    {
        printf("b.tet文件打开失败！\n");
    }
    else
    {
        printf("b.txt文件打开成功\n");
        ch = fgetc(fp);
        while (!feof(fp))
        {
            printf("读出来的字符：%c\n", ch);
            ch = fgetc(fp);
        }
        fclose(fp);
    }
    return 0;
}