Java tutorial
public class Main { public static void main(String args[]) { Object objectRef = "hello"; String string = "goodbye"; char charArray[] = { 'a', 'b', 'c', 'd', 'e', 'f' }; boolean booleanValue = true; char characterValue = 'K'; int integerValue = 7; long longValue = 10000000; float floatValue = 2.5f; double doubleValue = 33.3; StringBuffer buffer = new StringBuffer(); buffer.insert(0, objectRef); buffer.insert(0, " "); buffer.insert(0, string); buffer.insert(0, " "); buffer.insert(0, charArray); buffer.insert(0, " "); buffer.insert(0, charArray, 3, 3); buffer.insert(0, " "); buffer.insert(0, booleanValue); buffer.insert(0, " "); buffer.insert(0, characterValue); buffer.insert(0, " "); buffer.insert(0, integerValue); buffer.insert(0, " "); buffer.insert(0, longValue); buffer.insert(0, " "); buffer.insert(0, floatValue); buffer.insert(0, " "); buffer.insert(0, doubleValue); System.out.printf("buffer after inserts:\n%s\n\n", buffer.toString()); } }