What value does read() return when it has reached the end of a file?

1080

---

What class is the top of the awt event hierarchy?

1165

---

How are the elements of a cardlayout organized?

1137

---

What method is invoked to cause an object to begin executing as a separate thread?

1096

---

What is the relationship between an event-listener interface and an event-adapter class?

1184

---

What must a class do to implement an interface?

1287

---

What value does readline() return when it has reached the end of a file?

1145

---

When a thread blocks on i/o?

1174

---

Which characters may be used as the second character of an identifier, but not as the first character of an identifier?

1109

---

Which javutil classes and interfaces support event handling?

1103

---

What is the immediate superclass of the applet class?

1140

---

Is “abc” a primitive value?

1165

---

What is the map interface?

1177

---

What state does a thread enter when it terminates its processing?

1129

---

What is the difference between the string and stringbuffer classes?

1167

---