list实例应用

package Test01;

import java.util.ArrayList;
import java.util.List;

public class Test02 {

public static void main(String[] args){
a();
b();
c();
}

@SuppressWarnings("unchecked")
public static void a(){
@SuppressWarnings("rawtypes")
List list = new ArrayList();
int sum = 0;
for (int i = 0; i < 10; i++) {
sum = sum+i;
}
System.out.println(sum);
list.add(sum);
System.out.println(list);
}

@SuppressWarnings("unchecked")
public static void b(){
@SuppressWarnings("rawtypes")
List list = new ArrayList();
for (int i = 0; i < 10; i++) {
list.add(i);
}
System.out.println(list);
}

@SuppressWarnings("unchecked")
public static void c(){
@SuppressWarnings("rawtypes")
List list = new ArrayList();
for (int i = 10; i > 0; i--) {
list.add(i);
}
System.out.println(list);
}
}