本文整理了Java中java.lang.Runtime.freeMemory()方法的一些代码示例，展示了Runtime.freeMemory()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Runtime.freeMemory()方法的具体详情如下：
包路径：java.lang.Runtime
类名称：Runtime
方法名：freeMemory

Runtime.freeMemory介绍

[英]Returns the number of bytes currently available on the heap without expanding the heap. See #totalMemory for the heap's current size. When these bytes are exhausted, the heap may expand. See #maxMemory for that limit.
[中]返回堆上当前可用的字节数，而不展开堆。请参阅#totalMemory以了解堆的当前大小。当这些字节耗尽时，堆可能会扩展。有关该限制，请参见#maxMemory。

代码示例

代码示例来源：origin: skylot/jadx

public static boolean isFreeMemoryAvailable() {
  Runtime runtime = Runtime.getRuntime();
  long maxMemory = runtime.maxMemory();
  long totalFree = runtime.freeMemory() + (maxMemory - runtime.totalMemory());
  return totalFree > MIN_FREE_MEMORY;
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap() {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: libgdx/libgdx

@Override
public long getJavaHeap () {
  return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}

代码示例来源：origin: apache/incubator-dubbo

@Override
public Status check() {
  Runtime runtime = Runtime.getRuntime();
  long freeMemory = runtime.freeMemory();
  long totalMemory = runtime.totalMemory();
  long maxMemory = runtime.maxMemory();
  boolean ok = (maxMemory - (totalMemory - freeMemory) > 2048); // Alarm when spare memory < 2M
  String msg = "max:" + (maxMemory / 1024 / 1024) + "M,total:"
      + (totalMemory / 1024 / 1024) + "M,used:" + ((totalMemory / 1024 / 1024) - (freeMemory / 1024 / 1024)) + "M,free:" + (freeMemory / 1024 / 1024) + "M";
  return new Status(ok ? Status.Level.OK : Status.Level.WARN, msg);
}

代码示例来源：origin: apache/incubator-dubbo

@Override
public Status check() {
  Runtime runtime = Runtime.getRuntime();
  long freeMemory = runtime.freeMemory();
  long totalMemory = runtime.totalMemory();
  long maxMemory = runtime.maxMemory();
  boolean ok = (maxMemory - (totalMemory - freeMemory) > 2048); // Alarm when spare memory < 2M
  String msg = "max:" + (maxMemory / 1024 / 1024) + "M,total:"
      + (totalMemory / 1024 / 1024) + "M,used:" + ((totalMemory / 1024 / 1024) - (freeMemory / 1024 / 1024)) + "M,free:" + (freeMemory / 1024 / 1024) + "M";
  return new Status(ok ? Status.Level.OK : Status.Level.WARN, msg);
}

代码示例来源：origin: skylot/jadx

public void update() {
  long used = runtime.totalMemory() - runtime.freeMemory();
  int usedKB = (int) (used / 1024);
  setValue(usedKB);
  setString(String.format(textFormat, (usedKB / TWO_TO_20), maxGB));
  if ((used + Utils.MIN_FREE_MEMORY) > runtime.maxMemory()) {
    setForeground(RED);
  } else {
    setForeground(GREEN);
  }
}

代码示例来源：origin: ReactiveX/RxJava

@Override
  public void run() {
    i++;
    if (i % 100000 == 0) {
      System.out.println(i + "  Total Memory: " + Runtime.getRuntime().totalMemory() + "  Free: " + Runtime.getRuntime().freeMemory());
    }
    if (i < 1000000L) {
      inner.schedule(this);
    } else {
      latch.countDown();
    }
  }
});

代码示例来源：origin: ReactiveX/RxJava

@Override
  public void run() {
    i++;
    if (i % 100000 == 0) {
      System.out.println(i + "  Total Memory: " + Runtime.getRuntime().totalMemory() + "  Free: " + Runtime.getRuntime().freeMemory());
    }
    if (i < 1000000L) {
      inner.schedule(this);
    } else {
      latch.countDown();
    }
  }
});

代码示例来源：origin: skylot/jadx

public static String memoryInfo() {
  Runtime runtime = Runtime.getRuntime();
  long maxMemory = runtime.maxMemory();
  long allocatedMemory = runtime.totalMemory();
  long freeMemory = runtime.freeMemory();
  return "heap: " + format(allocatedMemory - freeMemory) +
      ", allocated: " + format(allocatedMemory) +
      ", free: " + format(freeMemory) +
      ", total free: " + format(freeMemory + maxMemory - allocatedMemory) +
      ", max: " + format(maxMemory);
}