static静态方法的使用

//测试类，用来执行代码
package homework;

import java.util.Scanner;

public class Test {
public static void main(String[] args) {
int[] a={4,5,3,6,8,1};//自己初始化数组
int[] b=new int[10];//自行输入数组数字
Scanner scanner=new Scanner(System.in);
int i=0;
//输入数组b中内容，直至输入0退出
while(true){
System.out.println("请输入一个数字，输入0退出");
b[i]=scanner.nextInt();
if(b[i]==0)
{
break;
}
i++;
}
//调用静态方法执行相应功能
ArrUtill.arrPrint(a);
int sum1=ArrUtill.getSum(a);
int sum2=ArrUtill.getSum(b);
System.out.println("求和为："+sum1);
System.out.println(sum2);
Student.teacherName="sayuri";
Student s1=new Student("asuka",19,"w");
ArrUtill.objectPrint(s1);
}

}

建立一个学生类，定义学生信息
package homework;
//定义学生类
public class Student {
private String name;
private int age;
private String gender;
static String teacherName;
public Student(){

}
public Student(String name,int age,String gende){
    this.name=name;
    this.age=age;
    this.gender=gende;
}

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 void setGender(String gender){
    this.gender=gender;
}
public String getGender(){
    return gender;
}

}

建立自己需要的静态方法
package homework;

public class ArrUtill {
private ArrUtill(){}//设置为私有

//输出整数数组的静态方法
public static void arrPrint(int[] arr){
    for (int j : arr) {
        System.out.print(j+" ");
    }
    System.out.println();
}

//求和的静态方法
public static int getSum(int[] arr){
    int sum=0;
    for(int j : arr){
        sum+=j;
    }
    return sum;
}

//输出学生对象内容的静态方法
public static void objectPrint(Student student){
    String name=student.getName();
    int stuAge= student.getAge();
    String gender=student.getGender();
    System.out.print(name+" ");
    System.out.print(stuAge+" ");
    System.out.println(gender);
}

}