Method main

day12/code/day12_String/src/cn/itcast_03/StringDemo.java:13–46

(String[] args)

 */
public class StringDemo {
	public static void main(String[] args) {
		String s = "helloworld";

		// boolean equals(Object obj):�Ƚ��ַ����������Ƿ���ͬ���ϸ����ִ�Сд
		System.out.println("equals():" + s.equals("helloworld"));
		System.out.println("equals():" + s.equals("HelloWorld"));
		System.out.println("----------------------------------");

		// boolean equalsIgnoreCase(String str):�Ƚ��ַ����������Ƿ���ͬ�������Ǵ�Сд
		System.out.println("equalsIgnoreCase():"
				+ s.equalsIgnoreCase("helloworld"));
		System.out.println("equalsIgnoreCase():"
				+ s.equalsIgnoreCase("HelloWorld"));
		System.out.println("----------------------------------");

		// boolean contains(String str):�ж��Ƿ����ָ����С��
		System.out.println("contains():" + s.contains("owo"));
		System.out.println("contains():" + s.contains("hw"));
		System.out.println("----------------------------------");

		// boolean startsWith(String str):�ж��Ƿ���ָ�����ַ�����ͷ
		System.out.println("startsWith():" + s.startsWith("hw"));
		System.out.println("startsWith():" + s.startsWith("owo"));
		System.out.println("startsWith():" + s.startsWith("h"));
		System.out.println("----------------------------------");

		// boolean endsWith(String str):�ж��Ƿ���ָ�����ַ�����β:�Լ���ϰ

		// boolean isEmpty():�ж��ַ����������Ƿ�Ϊ��
		System.out.println("isEmpty():" + s.isEmpty());
		// System.out.println("isEmpty():"+null.isEmpty());
		// //���󣬶���Ϊnull��˵�����󲻴��ڣ����󲻴��ڣ��Ͳ��ܵ��÷���
		System.out.println("isEmpty():" + "".isEmpty());
	}
}