Java String 类

/**
 * Java String 类
 */
public class learn_11 {
    public static void main(String[] args) {
        //公共池
        String s1 = "abc";
        String s2 = "abc";
        String s3 = s1;
        //堆
        String s4 = new String("abc");
        String s5 = new String("abc");

        char[] s6 = {'a','b','c'};
        String abc = new String(s6);
        System.out.println("s1=>"+s1);
        System.out.println("s2=>"+s2);
        System.out.println("s3=>"+s3);
        System.out.println("s4=>"+s4);
        System.out.println("s5=>"+s5);
        System.out.println("abc=>"+abc);
        System.out.println("abc.length=>"+abc.length());
    }
}