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int a = 10;
int b = a;
int b = 11;
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String a = "111";
String b = new String("111");
System.out.println(a == b);
System.out.println(a.equals(b));
a = b;
String c = new String("111");
System.out.println(a == c);
System.out.println(a == b);
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false
true
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true
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