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java Programming Glossary: abstractinst

Assigning a generic List to a concrete ArrayList is causing a compile-time error

http://stackoverflow.com/questions/20037561/assigning-a-generic-list-to-a-concrete-arraylist-is-causing-a-compile-time-error

it but it boils down to why is the line below invalid List AbstractInst extends IInstType insts new ArrayList MIPSInst I'm getting a.. error that ArrayList MIPSInst cannot be converted to List AbstractInst extends IInstType . The class MIPSInst extends AbstractInst.. extends IInstType . The class MIPSInst extends AbstractInst MIPSInstType and MIPSInstType implements IInstType . I've read..