Java StringÀà½âÎö
1. ¶ÑÓëstring pool
String s1=new String("abc");
String s2="abc";
2.intern()·½·¨
intern()·½·¨»ñÈ¡string poolÖÐ×Ö·û´®
3. StringBuilderÓÃÀ´¹¹ÔìString
String s="Hello";
String s1="Hello"+"World"
String s2=s+"World"
s2=new Stringbuilder(s);
s2.append("World");
/*±àÒëÆ÷ÓÅ»¯*/
final String s="Hello";
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package org.bupt.test;
import java.util.ArrayList;
class MyResource {
ArrayList<Integer> arrList= new ArrayList<Integer>();
public MyResource(ArrayList<Integer> arrList) {
this.arrList = arrList;
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