File	Doc	Category	Size	Date	Package
HashCode.java	API Doc	Android 1.5 API	5914	Wed May 06 22:41:04 BST 2009	org.apache.harmony.misc

HashCode

• java.lang.Object

class Thing {
long id;
String name;
float weight;
}

public int hashCode() {
int hashCode = HashCode.EMPTY_HASH_CODE;
hashCode = HashCode.combine(hashCode, id);
hashCode = HashCode.combine(hashCode, name);
hashCode = HashCode.combine(hashCode, weight);
return hashCode;
}

public int hashCode() {
return new HashCode().append(id).append(name).append(weight).hashCode();
}

Fields Summary
public static final int	EMPTY_HASH_CODE The hashCode value before any data is appended, equals to 1.
private int	hashCode

Constructors Summary

Methods Summary
public final org.apache.harmony.misc.HashCode	append(float value) Appends value's hashCode to the current hashCode. param value new element return this hashCode = combine(hashCode, value); return this;
public final org.apache.harmony.misc.HashCode	append(double value) Appends value's hashCode to the current hashCode. param value new element return this hashCode = combine(hashCode, value); return this;
public final org.apache.harmony.misc.HashCode	append(boolean value) Appends value's hashCode to the current hashCode. param value new element return this hashCode = combine(hashCode, value); return this;
public final org.apache.harmony.misc.HashCode	append(java.lang.Object value) Appends value's hashCode to the current hashCode. param value new element return this hashCode = combine(hashCode, value); return this;
public final org.apache.harmony.misc.HashCode	append(int value) Appends value's hashCode to the current hashCode. param value new element return this hashCode = combine(hashCode, value); return this;
public final org.apache.harmony.misc.HashCode	append(long value) Appends value's hashCode to the current hashCode. param value new element return this hashCode = combine(hashCode, value); return this;
public static int	combine(int hashCode, boolean value) Combines hashCode of previous elements sequence and value's hashCode. param hashCode previous hashCode value param value new element return combined hashCode int v = value ? 1231 : 1237; return combine(hashCode, v);
public static int	combine(int hashCode, long value) Combines hashCode of previous elements sequence and value's hashCode. param hashCode previous hashCode value param value new element return combined hashCode int v = (int) (value ^ (value >>> 32)); return combine(hashCode, v);
public static int	combine(int hashCode, float value) Combines hashCode of previous elements sequence and value's hashCode. param hashCode previous hashCode value param value new element return combined hashCode int v = Float.floatToIntBits(value); return combine(hashCode, v);
public static int	combine(int hashCode, double value) Combines hashCode of previous elements sequence and value's hashCode. param hashCode previous hashCode value param value new element return combined hashCode long v = Double.doubleToLongBits(value); return combine(hashCode, v);
public static int	combine(int hashCode, java.lang.Object value) Combines hashCode of previous elements sequence and value's hashCode. param hashCode previous hashCode value param value new element return combined hashCode return combine(hashCode, value.hashCode());
public static int	combine(int hashCode, int value) Combines hashCode of previous elements sequence and value's hashCode. param hashCode previous hashCode value param value new element return combined hashCode return 31 * hashCode + value;
public final int	hashCode() Returns accumulated hashCode return hashCode;