字符串常见的操作

public class StringTest {

    public static void main(String[] args)
    {
        String a=new String("sSassasss");
        
        System.out.println(a.substring(1));
        
        System.out.println(a.substring(2,4));
        
        String[] array=a.split(",", 3);
        System.out.println(array.length);
        
        System.out.println("Begin");
        for(String str : array)
            System.out.println(str+"
");
        System.out.println("End");
        
        String b=new String("ssss");
        
        //Compare that current string is equal to another.
        if(a.equals(b))
            System.out.println("Equal");
        else
            System.out.println("No Equal");
        
      //After ignore case,Judge that current string is equal to another.
        if(a.equalsIgnoreCase(b)) //Ignore case.
            System.out.println("Equal");
        else
            System.out.println("No Equal");
        
        //Get special char position
        System.out.println(a.indexOf("a"));
        
        //Get special char position from third char on.
        System.out.println(a.indexOf("a",3));
        
    }
}