stringmethoddemo.java

本java源程序包括了大量的学习程序（共27章）方便大家学习

public class StringMethodDemo 
{
	public static void main(String[] args) 
	{
		String str1 = "abc";
		String str2 = "aab";
		String str3 = "abd";
		String str4 = "abc";
		String str5 = "ABC";
		String str6 = "abcdefgabcde";
		//以上完成字符串的声明及初始化
		int i = str1.compareTo(str2);
		int j = str1.compareTo(str3);
		int k = str1.compareTo(str4);
		//以上调用String的compareTo()方法来比较字符串
		System.out.println("str1 is:"+str1);
		System.out.println("str2 is:"+str2);
		System.out.println("str3 is:"+str3);
		System.out.println("str4 is:"+str4);
		System.out.println("str5 is:"+str5);
		System.out.println("str6 is:"+str6);
		System.out.print("The result of str1 compareTo str2 is:");
		System.out.println(i);
		System.out.print("The result of str1 compareTo str3 is:");
		System.out.println(j);
		System.out.print("The result of str1 compareTo str4 is:");
		System.out.println(k);
		System.out.print("The result of str1 equals str5 is:");
		System.out.println(str1.equals(str5));
		//调用String的equals()方法来比较字符串
		System.out.print("The result of str1 equalsIgnoreCase str5 is:");
		System.out.println(str1.equalsIgnoreCase(str5));
		//调用String的equalsIgnoreCase()方法来比较字符串
		int m = str6.indexOf((int)'d');
		//调用String的indexOf()方法，返回字符'd'第一次出现的位置
		System.out.println("The char \"d\" first appear position is :"+m);
		int n = str6.indexOf((int)'d',4);
		//调用String的indexOf()方法，返回字符'd'从第四位后，首次出现的位置
		System.out.println("After 4th position The char \"d\" appear position is :"+n);
	}

}