【2021-07-01】分析程序的运行结果,并解释为什么?
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请分析该程序的运行结果,并解释为什么?
程序一:
public class Main {
  public static void main(String[] args) {
    int a = 1000;
    int b = 1000;
    System.out.println(a == b);
  }
}
程序二:
public class Main {
  public static void main(String[] args) {
    Integer a = 1000;
    Integer b = 1000;
    System.out.println(a == b);
  }
}
程序三:
public class Main {
    public static void main(String[] args) {
        Integer a = 1;
        Integer b = 1;
        System.out.println(a == b);
    }
}
程序四:
public class Main {
    public static void main(String[] args) {
        Integer a = new Integer(1);
        Integer b = new Integer(1);
        System.out.println(a == b);
    }
}
                    
                    
                    
                
          
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