口诀,catch优先return, 无论怎样finally
2019年9月19日
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| private void go() {
tag = "ldo-";
Log.d(tag, "go: start");
try {
Log.d(tag, "go: try 01");
arrayList.get(0);
Log.d(tag, "go: return 01");
return;
} catch (Exception e) {
Log.d(tag, "go: catch01");
e.printStackTrace();
try {
arrayList = new ArrayList<>();
arrayList.add(1);
} catch (Exception e1) {
e1.printStackTrace();
Log.d(tag, "go: catch02");
}
} finally {
Log.d(tag, "go: finally");
}
}
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方法第一次执行
猜猜看打印什么
嘟嘟嘟嘟
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公布
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| 01-01 01:24:02.567 17772-17772/ D/ldo-: go: start
01-01 01:24:02.567 17772-17772/ D/ldo-: go: try 01
01-01 01:24:02.567 17772-17772/ D/ldo-: go: catch01
01-01 01:24:02.570 17772-17772/ D/ldo-: go: finally
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第二次执行
嘟嘟嘟
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| 01-01 01:27:29.302 17772-17772/ D/ldo-: go: start
01-01 01:27:29.302 17772-17772/ D/ldo-: go: try 01
01-01 01:27:29.302 17772-17772/ D/ldo-: go: return 01
01-01 01:27:29.302 17772-17772/ D/ldo-: go: finally
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别忘了会执行finally哦~
最后考大家一个, 大家加油哦 ~. ~
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| private void go() {
tag = "ldo-";
Log.d(tag, "go: start");
try {
Log.d(tag, "go: try 01");
arrayList.get(0);
Log.d(tag, "go: return 01");
return;
} catch (Exception e) {
Log.d(tag, "go: catch01");
e.printStackTrace();
try {
arrayList.add(1);
Log.d(tag, "go: try 02");
Log.d(tag, "go: return 02");
return;
} catch (Exception e1) {
e1.printStackTrace();
Log.d(tag, "go: catch02");
return;
}finally {
Log.d(tag, "go: finally 02");
}
} finally {
Log.d(tag, "go: finally 01");
}
}
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