stringmethods.java

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

import java.io.*;
public class StringMethods
{
  public static void main (String[] args) 
  {
    
    String string1 = new String("Hello");
    String string2 = new String("Hello there");
    int n;

    System.out.println("string1 is the string " + string1); 
    System.out.println("string12is the string " + string2);
    System.out.println();  // blank line

    n = string1.compareTo(string2);

    if (n < 0) 
      System.out.println(string1 + " is less than " + string2);
    else if (n == 0)
      System.out.println(string1 + " is equal to " + string2); 
    else
      System.out.println(string1 + " is greater than " + string2);
    
    if (string1.equalsIgnoreCase("HELLO"))
      System.out.println("string1 equals (ignoring case) HELLO");
    else
      System.out.println("string1 does not equal (ignoring case) HELLO");

    System.out.println("\nThe number of characters in string1 is " + string1.length());
    System.out.println("The number of characters in string1 is " + string2.length());
  
    string1 = string1.concat(" there world!");
    System.out.println("\nAfter concatenation, string1 contains the characters " +string1);
    System.out.println("The length of this string is " + string1.length());

    string1 = string1.toLowerCase();
    System.out.println("\nIn lowercase this string is " + string1);

    string1 = string1.toUpperCase();
    System.out.println("In uppercase this string is " + string1);

   }
}