CharAt.java

// http://www.javadrive.jp/start/string/index5.htmlからコピペ
class CharAt{ //JSample5_1をCharAtに改変
  public static void main(String args[]){
    String str = "パタトクカシーー"; //腕時計をパタトクカシーーに改変

    char c1 = str.charAt(0);
    char c3 = str.charAt(2);
    char c5 = str.charAt(4);
  	char c7 = str.charAt(6); //一つ追加
// http://www.techscore.com/blog/2012/11/29/%E6%96%87%E5%AD%97%E5%88%97%E7%B5%90%E5%90%88-java%E7%B7%A8/からコピペ改変
  	StringBuilder buf = new StringBuilder();
	buf.append(c1);
	buf.append(c3);
  	buf.append(c5);
	buf.append(c7);
	String c = buf.toString();
  	
    System.out.println(c);
    
  }
}