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List<String> list = new ArrayList<String>();
list.add("item");
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map.put("key", 1);
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List<String> list = ["item"];
String item = list[0];
Set<String> set = {"item"};
Map<String, Integer> map = {"key" : 1};
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return br.readLine();
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return br.readLine();
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InputStream in = new FileInputStream(src);
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import java.util.Random;
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import java.io.BufferedInputStream;
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import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
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  String str  = "[010101]+[010102]";
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