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package t001;
public class C01 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
StringBuffer b1 = new StringBuffer("abc");
StringBuffer b2 = new StringBuffer("abc");
System.out.println(b1==b2); //false
System.out.println(b1.equals(b2)); //false
StringBuilder b3 = new StringBuilder("def");
StringBuilder b4 = new StringBuilder("def");
System.out.println(b3==b4); //false
System.out.println(b3.equals(b4)); //false
}
}
public boolean equals(Object anObject) {
if (this == anObject) {
return true;
}
if (anObject instanceof String) {
String anotherString = (String)anObject;
int n = count;
if (n == anotherString.count) {
char v1[] = value;
char v2[] = anotherString.value;
int i = offset;
int j = anotherString.offset;
while (n-- != 0) {
if (v1[i++] != v2[j++])
return false;
}
return true;
}
}
return false;
}
public boolean equals(Object obj) {
return (this == obj);
}