othermethods.java

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

import java.lang.*;
public class OtherMethods
{
  public static void main(String[] args)
  {
     
    String string1 = "LINEAR PROGRAMMING THEORY";
    String s1, s2, s3;
    int j, k, l;

    System.out.println("The original string is " + string1);

    j = string1.indexOf('I');
    System.out.println("  The first position of 'I' is " + j);

    k = string1.indexOf('I', (j+1));
    System.out.println("  The next position of 'I' is " + k);

    l = string1.lastIndexOf('I');
    System.out.println("  The last position of an 'I' is " + l);

    j = string1.indexOf("THEORY");
    System.out.println("  The first location of \"THEORY\" is is " + j);

    k = string1.lastIndexOf("ING");
    System.out.println("  The last index of \"ING\" is " + k);

    s1 = string1.substring(2,6);
    s2 = string1.substring(18,22);    
    s3 = string1.substring(6,14);    
    
    System.out.println(s1.concat(s2).concat(s3));
  }
}