Java – 在函数内创建具有常量值的字符串

public class A {
      private static final String DOSOMETHING_METRICS = "doSomethingmetrics";
      private static final String SAYSOMETHING_METRICS = "saySomethingmetrics";
      public void doSomething() {
            ...
            System.out.println("Metrics for " + DOSOMETHING_METRICS + "is something");
      }
      public void saySomething() {
            ...
            System.out.println("Metrics for " + SAYSOMETHING_METRICS + "is something");
      }
}

要么

public class A {
      public void doSomething() {
            final String DOSOMETHING_METRICS = "doSomethingmetrics";
            ...
            System.out.println("Metrics for " + DOSOMETHING_METRICS + "is something");
      }
      public void saySomething() {
            final String SAYSOMETHING_METRICS = "saySomethingmetrics";
            ...
            System.out.println("Metrics for " + SAYSOMETHING_METRICS + "is something");
      }
}

我认为方法1在内存优化的情况下获胜,因为编译器只分配了一次内存,垃圾收集器不需要释放在每个函数调用中创建的字符串.但是,我认为良好的编码实践建议变量应该绑定到必须使用的范围,并且常量应该定义为它们在方法2获胜的程序中首次使用时的常量.

你对此有什么看法？哪个方面更重要？这里的函数将被多次调用(比如说至少100K次).