diff options
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java')
| -rw-r--r-- | BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java b/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java index 1de06a6..0e109aa 100644 --- a/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java +++ b/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java @@ -28,14 +28,16 @@ public class SimpleStack<T> extends Stack<T> { @Override public T pop() { - if(backing.isEmpty()) throw new StackUnderflowException(); + if (backing.isEmpty()) + throw new StackUnderflowException(); return backing.pop(); } @Override public T top() { - if(backing.isEmpty()) throw new StackUnderflowException(); + if (backing.isEmpty()) + throw new StackUnderflowException(); return backing.peek(); } @@ -67,27 +69,26 @@ public class SimpleStack<T> extends Stack<T> { @Override public boolean equals(Object obj) { - if(this == obj) return true; - if(obj == null) return false; - if(getClass() != obj.getClass()) return false; + if (this == obj) + return true; + if (obj == null) + return false; + if (!(obj instanceof SimpleStack<?>)) + return false; SimpleStack<?> other = (SimpleStack<?>) obj; - if(backing == null) { - if(other.backing != null) return false; - } else if(!backing.equals(other.backing)) return false; + if (backing == null) { + if (other.backing != null) + return false; + } else if (!backing.equals(other.backing)) + return false; return true; } @Override public String toString() { - StringBuilder builder = new StringBuilder(); - - builder.append("SimpleStack [backing="); - builder.append(backing); - builder.append("]"); - - return builder.toString(); + return String.format("SimpleStack [backing=%s]", backing); } } |