stringconstructors.java

《A first book of java》by Gary J.Bronson 北大出版社

import java.io.*;
public class StringConstructors
{
  public static void main (String[] args) 
  {
    
    String str1 = new String();
    String str2 = new String("Good Morning");
    char data []= {'H', 'o', 't', ' ', 'D', 'o', 'g'};
    String str3 = new String(data);
    String str4 = new String(data, 4 ,3);
    byte bytedata[]= {(byte) 'l', (byte) 'i', 
                      (byte) 'n', (byte) 'e',
                      (byte) 'a', (byte) 'r'};
    String str5 = new String(bytedata);
    String str6 = new String(bytedata, 3, 3);
    StringBuffer sb = new StringBuffer("Have a great day!");
    String str7 = new String(sb);
     
    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.println("str7 is: " + str7);
  }
}