You Want to Enumerate All of the Keys in a Map

question 110

Multiple Choice

You want to enumerate all of the keys in a map named myMap whose keys are type String. Which of the following statements will allow you to do this?

• A) Set<String> keySet = myMap.keySet();
• For (String key : keySet) {. . . }
• B) Set<String> keySet = myMap.getKeys();
• For (String key : keySet) {. . . }
• C) Set<String> keySet = myMap.keys();
• For (String key : keySet) {. . . }
• D) Set<String> keySet = myMap.getKeySet();
• For (String key : keySet) {. . . }

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Definitions:

Real Wages

Wages adjusted for inflation, reflecting the true purchasing power of income received by workers.

Nominal Income

The amount of money earned in current dollars, without adjustment for inflation, affecting purchasing power over time.

Real Income

Income of individuals or nations after adjusting for inflation, reflecting the actual purchasing power.

Anticipated

Expected or foreseen based on current trends or available information.