StringBuilderDemo.java

packagesection5_Strings;

publicclassStringBuilderDemo {

publicstaticvoidmain(String[] args) {

System.out.println("----------");
StringBuildersblank = newStringBuilder();
System.out.println(sblank);

StringBuildersb = newStringBuilder("hello");
System.out.println(sb);

System.out.println(sb.length());

sb.append('A');
System.out.println(sb);
sb.append("HELLO");
System.out.println(sb);

// sb = "hello"; // Type mismatch: cannot convert from String to
// StringBuilder

Strings = "testing";
StringBuildersbuild = newStringBuilder(s);
System.out.println(sbuild);

sbuild.insert(2, 'E');
System.out.println(sbuild);
sbuild.insert(sbuild.length(), "END");
System.out.println(sbuild);

sbuild.setCharAt(1, 'O');
System.out.println(sbuild);
sbuild.setCharAt(sbuild.length() - 1, 'Z');
System.out.println(sbuild);

sbuild.delete(2, 5);
System.out.println(sbuild);
sbuild.deleteCharAt(0);
System.out.println(sbuild);
sbuild.deleteCharAt(sbuild.length() - 1);
System.out.println(sbuild);
 }
}

/* output:

----------

hello
5
helloA
helloAHELLO
testing
teEsting
teEstingEND
tOEstingEND
tOEstingENZ
tOingENZ
OingENZ
OingEN
*/