stringoprations.java

来自「180个针对Java初学者的简单实例,包含了180個適合與初學者的源碼實例」· Java 代码 · 共 45 行

//一些字符串操作.
class StringOprations { 
  public static void main(String args[]) { 
    String stringTest1 ="这是一个java字符串测试."; 
    String stringTest2 = new String(stringTest1);
    String stringTest3 = "java字符串方法的功能非常强大。"; 
    
    int result, idx;
    
    System.out.println("stringTest1的长度: " + 
                       stringTest1.length()); 
     // display stringTest1, one char at a time.
    for(int i=0; i < stringTest1.length(); i++)
      System.out.print(stringTest1.charAt(i)); 
    System.out.println(); 

    if(stringTest1.equals(stringTest2)) 
      System.out.println("stringTest1 == stringTest2"); 
    else 
      System.out.println("stringTest1 != stringTest2"); 
 
    if(stringTest1.equals(stringTest3)) 
      System.out.println("stringTest1 == stringTest3"); 
    else 
      System.out.println("stringTest1 != stringTest3"); 

    result = stringTest1.compareTo(stringTest3);
    if(result == 0)
      System.out.println("stringTest1 和 stringTest3 相等");
    else if(result < 0)
      System.out.println("stringTest1 小于 stringTest3");
    else
      System.out.println("stringTest1 大于 than stringTest3");

    // assign a new string to stringTest2
    stringTest2 = "One Two Three One";

    idx = stringTest2.indexOf("One");
    System.out.println("第一个字符串的索引 One: " + idx);
    idx = stringTest2.lastIndexOf("One");
    System.out.println("最后一个字符串的索引 One: " + idx);
    
  } 
}