stringdemo.java~5~

jbuilder2006一书的所有源代码

package string;

public class StringDemo {
  public static void main(String[] args) {
    String s1 = "  String demo ";
    String s2 = "Hello, This is a String Sample.";
    String s3 = "hello, This is a String Sample.";
    String s4 = "This is a String Sample.";
    String s5 = "     Hello, This is a String Sample.";

    System.out.println("下面演示字符串抽取方法的应用");
    System.out.println("s1.charAt(7) = " + s1.charAt(7));
    System.out.println("s1.substring(6) = " + s1.substring(6));

    System.out.println("下面演示字符串比较方法的应用");
    System.out.println("s1.equals(s2) = " + s1.equals(s2));
    System.out.println("s1.equalsIgnoreCase(s3) = " + s1.equalsIgnoreCase(s3));
    System.out.println("s1 == s2 = " + String.valueOf(s1 == s2));
    System.out.println("s1.compareTo(s2) = " + s1.compareTo(s2));
    System.out.println("s1.regionMatches(6,s4,0,s4.length()) = " +
                       s1.regionMatches(6,s4,0,s4.length()));

    System.out.println("下面演示字符串查找方法的应用");
    System.out.println("s1.indexOf(str) = " + s1.indexOf("is"));
    System.out.println("s1.indexOf(str,int) = " + s1.indexOf("This",0));
    System.out.println("s1.indexOf(str,int) = " + s1.indexOf("is",20));

    System.out.println("下面演示字符串长度方法的应用");
    System.out.println("s1.length() = " + s1.length());

    System.out.println("下面演示字符串替换方法的应用");
    System.out.println("s1.replace('i','I') = " + s1.replace('i','I'));

    System.out.println("下面演示字符串连接方法的应用");
    System.out.println("s4.concat(s4) = " + s4.concat(s4));
    System.out.println("s4+s5 = " + s4 + s5);

    System.out.println("下面演示字符串首尾比较方法的应用");
    System.out.println("s1.startWith() = " + s1.startsWith("Hello"));
    System.out.println("s1.startWith() = " + s1.startsWith("T",8));
    System.out.println("s1.endWith() = " + s1.endsWith("."));

    System.out.println("下面演示字符串大小写转换方法的应用");
    System.out.println("s1.toLowerCase() = " + s1.toLowerCase());
    System.out.println("s1.toUpperCase() = " + s1.toUpperCase());

    System.out.println("下面演示字符串首尾空格截取方法的应用");
    System.out.println("s1.trim() = " + s5.trim());
  }
}