yansuoo的博客

public String toString() {        Iterator it = iterator();        if (! it.hasNext())            return "[]";        StringBuilder sb = new StringBuilder();        sb.append('[');      

public int indexOf(Object o) {        ListIterator it = listIterator();        if (o==null) {            while (it.hasNext())                if (it.next()==null)                    return it

public static boolean equals(long[] a, long[] a2) {        if (a==a2)            return true;        if (a==null || a2==null)            return false;        int length = a.length;      

public class HashMap extends AbstractMap    implements Map, Cloneable, Serializable {}public class Hashtable    extends Dictionary    implements Map, Cloneable, java.io.Serializable {

//Returns a hash code for this string. The hash code for a     * {@code String} object is computed as     *      * s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1] public int hashCode() {     

public final class StringBuffer    extends AbstractStringBuilder    implements java.io.Serializable, CharSequence{ private synchronized void writeObject(java.io.ObjectOutputStream s)       

public final class StringBuffer    extends AbstractStringBuilder    implements java.io.Serializable, CharSequence{  private void writeObject(java.io.ObjectOutputStream s)        throws jav