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String str=new String("abc");
String str="abc";
String a="ab"+"cd";
String a = "ab";
String b = "cd";
String c = "abcd";
String d = "ab" + "cd";
String e = a + "cd";
String f = "ab" + b;
String g = a + b;
String a = "ab";
String b = "cd";
String c = "abcd";
String d = "ab" + "cd";
String e = a + "cd";
String f = "ab" + b;
String g = a + b;