String类的构造方法详解

package StringDemo;
//String类的构造方法详解
//方法一：String();
//方法二：String(byte[] bytes)
//方法三：String (byte[] bytes,int index,int length)
//方法四：String（char[] value）
//方法五：String（char[] value,int index,int length）
//方法六：String（String str）
public class StringDemo1 {

    public static void main(String[] args) {
        //方法一：String();
        String s1=new String();
        //String这个类重写了Object父类的方法，return this；
        System.out.println("s1:"+s1);
        System.out.println("s1.length:"+s1.length());
        System.out.println("---------------------");
  
        //方法二：String(byte[] bytes)
        byte[] byts={97,98,99,100,101,102};
        String s2=new String(byts);
        System.out.println("s2:"+s2);
        System.out.println("s2.length:"+s2.length());
        System.out.println("---------------------");
        
        //方法三：String (byte[] bytes,int index,int length)
        byte[] byts2={97,98,99,100,101,102};
        String s3=new String(byts2,2,4);
        System.out.println("s3:"+s3);
        System.out.println("s3.length:"+s3.length());
        System.out.println("---------------------");
        
        //方法四：String（char[] value）
        char [] value={'a','b','c','d','e','f'};
        String s4=new String(value);
        System.out.println("s4:"+s4);
        System.out.println("s4.length:"+s4.length());
        System.out.println("---------------------");
        
        //方法五：String（char[] value,int index,int length）
        char [] value2={'a','b','c','d','e','f'};
        String s5=new String(value,2,4);
        System.out.println("s5:"+s5);
        System.out.println("s5.length:"+s5.length());
        System.out.println("---------------------");
        
        //方法六：String（String str）
        String s6=new String("abcdef");
        System.out.println("s6:"+s6);
        System.out.println("s6.length:"+s6.length());
        System.out.println("---------------------");
        
    }

}