var StringBuffer = require("stringbuffer");
sb = new StringBuffer();
sb.append("HELLO").append("WORLD");
console.log(sb.toString());
sb = new StringBuffer("--");
sb.append("HELLO").append("WORLD");
console.log(sb.toString());
console.log(sb.toString("**"));
sb = new StringBuffer();
sb.append("LINE1").append("LINE2");
console.log(sb.toString());
header = new StringBuffer();
content = new StringBuffer();
footer = new StringBuffer();
header.append("<HEADER>");
content.append("LINE1").append("LINE2").append("LINE3");
footer.append("<FOOTER>");
console.log(header.append(content).append(footer).toString());