在Java中,ArrayList
以下代码示例演示了如何创建包含不同类型对象的ArrayList,并打印出它们的内容:
import java.util.ArrayList;
public class ArrayListExample {
public static void main(String[] args) {
ArrayList stringList = new ArrayList<>();
ArrayList integerList = new ArrayList<>();
ArrayList booleanList = new ArrayList<>();
stringList.add("Hello");
stringList.add("World");
integerList.add(10);
integerList.add(20);
booleanList.add(true);
booleanList.add(false);
System.out.println("String List:");
for (String s : stringList) {
System.out.println(s);
}
System.out.println("Integer List:");
for (int i : integerList) {
System.out.println(i);
}
System.out.println("Boolean List:");
for (boolean b : booleanList) {
System.out.println(b);
}
}
}
输出:
String List:
Hello
World
Integer List:
10
20
Boolean List:
true
false